How do people think this way?

Me and my wife are having our second baby and I feel guilty because my wife is due in two months and has not been able to enjoy this pregnancy. I've been in a dark place and she's been trying to support me while dealing with my mom who I blocked today. My mom has privately and publicly hurt me and my wife. Then she had the balls to make this Facebook post and twist things around. I don't know how somebody can know what happened between you and another person and still write this like I'm in the wrong. I didn't tell my wife because she doesn't need anymore stress but I need to understand how someone can turn things around in this way. This is what she posted

Me and my mom had a fight again and she brought it to Facebook. I hate people who post their business on Facebook like this. But this post is crazy. Me and my mom's issues started years ago but it all stems from one person. I went through child molestation for 4 years in Sunday school. He convinced me and my parents that I had impure thoughts and he would work with me privately about it. So I spent Sunday school away from the other kids. I told my step mom about it a few years after I stopped going and we went to court over it. We thought it was going to go to trial but he took a plea deal and did 6 months in prison plus community service. My mom was mad at this man and I thought was always on my side. My mom started telling me I was treating her like a doormat and punching bag because I was upset with her that she had seen this man Nathan at church one year and he apologized to her about everything but then said "I know he's your child, but can I at least tell you my side of what happened." And my mom justified listening to his side. Her justification is because it's what Jesus would have done. He found a twisted way to blame what happened on me and say how he could understand how I took his practices on helping me as molestation but it was never his intention to hurt me. Even though he threatened into silence for a few years by saying if I told anyone and made it sound like something it wasn't they will believe an adult over me and I could get sent away to a behavioral camp. I was hurt that she listened to his side because I'm your kid. Why do you need to hear it? My mom again said it's what Jesus would do and I said "Yeah well you're my mom. You're not fucking Jesus. " My mom had said some of the most vile shit I've ever heard and told me "Nathan has repented. He's letting God help him change. He's going to heaven. I know that for a fact. If you hold onto this anger you're going to hell while he's going to heaven." I told my mom "Do you know how vile you are for saying that?" I also told her that any God who would let someone who does that to children into heaven because they told God their sorry while sending me to hell for not forgiving this person who ruined my life is not a God I wanna worship. That was what led to me leaving religion. My mom's whole thing was I need to forgive and I've been in therapy for a decade and I've learned indont have to forgive anyone. Everyone always told me that forgiveness is for yourself, but I've never forgiven this man and I have the most beautiful life. I wake up happy to see my kid. My wife. I'm excited for our new baby! After therapy I'm able to say this man's name without being in emotional and physical pain. People can preach to me all day to forgive and I know I'm fine with not forgiving and have made a good life for myself. My therapist told me some people forgive and forget and some remember and move on. I remember and I moved on. I hate that man yes, but he isn't holding any space in my heart. I can say his name without feeling pain and I'm living a good and happy life. I didn't need to forgive. I needed help to heal and I've healed. What is bringing my pain now isn't even him specifically. It's the fact that I'm finding out my mom has lied to me about how involved she's been with him. I found out she has spoken to him at Christmas parties. They talk at Bible study. She even invited him over for dinner and her excuse for that was she invited everyone from bible study. And she lied to me about all this. I guarantee there's more. Me and my mom have been fighting a lot more lately because I found this out recently. The reason she says my wife has come between us is because I was going through something else and my mom called me and I couldn't deal with her and my wife told me not to answer. She answered my mom instead and they fought. The last fight before this Facebook post she made I told her what hurts me most is she lied to me and she tried to say she didn't mean to lie. She just saw someone who was sorry and she wanted to forgive. I told her it wasn't her place to forgive. It didn't happen to her so she has no right to forgive anything. And how is someone sorry if right after sorry they ask you to hear their side of the story and put blame on the child. She tried to say she does believe he didn't mean to hurt me and I lost my cook. I hate when people say that. Especially on the behalf of someone else. How do you do that to a child and not mean to hurt them? You know who you molest a child it's hurting them. You know when you rape someone you are hurting them. You know when you bully someone you are hurting them. It's insulting to my intelligence to try to say this person didn't mean to hurt me. I realized this had nothing to do with forgiveness or trying to hear someone out or moving on. My mom has allowed this person in her life because she believes him over me. That's what that is. And I told her that and hung up. Then she made that Facebook post. This happened over a decade ago and I am tired of having to relive it because of my mom. What I don't understand is how you can treat your kid like that and then post this shit on Facebook. What mental gymnastics do you have to do to be the victim. I blocked my mom. I may or may not address the situation one last time so everyone can know the truth and then I'm done. I don't deserve this stress, nor does my wife. I just need someone to explain to me how she got this from everything that's gone on.

Side note: Adding a side note but if there are any step moms out there. There isn't a love like a step parent who steps up love. I treated my step mom like shit and for some reason she never gave up on me and was there for me. Her and my dad have been there for me and my wife and I'm surprised never tried to send me away to a behavioral camp and stayed by my side when I was a little SHIT to her.