Conflicted

So, I have this girl I used to be super super close to. She was my best friend and helped me out a lot while my husband was in jail and she stopped talking to me when he got out and moved in with me because she thought I left her daughter I used to watch alone at my house when it was raining when I left to pick him up. It's a long story but I did not leave her alone. I had asked her to go on home and I'd watch her walk over to her house because I had to leave because my other friend was there to get me and still had to pick her kids up. She refused to go and sat on the porch and I didn't have time to figure out why she wasn't he usual perky self because I was already being rushed and I figured she was just wanting someone to pay attention (she has done that before many times) I tried to cheer her up. Got her to laughing and I gave her a jacket or something of mine because she didn't have anything and I told her she was more than welcome to stay until the rain dies down or until my father leaves my house (he was there). I left and I guess he had told her to go home or something and it go her upset and then when she left, he left and I guess by the time my friend looked out the window his car was gone so it looked like noone was there and looked like I just left her alone. Anyway, she said a lot of nasty things about me to everyone and called me a lot of names and never asked the truth. I would've told her had I known she thought that (I found out through the friend that took me to get my husband) but by that time, I had heard all these nasty things and I didn't even want to explain myself to someone who talked about me like that. She was my best friend so I just let it be and cut ties. Here in the past few weeks, we've been texting when her daughter asked me to take her to the store for candy and toys and we went from there. We haven't talked about it or anything but she found out I was pregnant and is having something made for my twins. I really freaking missed my best friend. And it sucked to not be able to share that with her when I found out. But I talked to her today and her husband and I have some kind of history idk if that's the right wording. Never together or anything like that but he was bad on some stuff this past summer which caused a lot of fights because he hurt her and it pissed me off. It's a long story about what all happened with him but he hasn't spoken to me at all and I don't really want him to. I honestly do despise him but me and her have been through so much together. I was there when she lost her baby this last time and it made us closer. Anyway, to the point, I really want to invite her to my baby shower but because of the fact that she might bring him and because he has put his hands on me (while he was high he didn't know what he was doing) I think my husband would flip out on him for it. I never charged him with anything I just let it go both times but I'd really like her to be there. IDK how to approach asking him if he'd be ok with me inviting her. Should I ask my aunt if she's okay with it? She's throwing it. I just need some advice. Thank you.