Am I overreacting?

I was thinking about posting this on Reddit but I figured that was way too mainstream and paranoid my family would see it. But anyways, its a long post and has mentions of sexual abuse ⚠️

When I was five years old, I was molested by my uncle's employee. At first, I didn't even know what was going on but then I figured it out in sixth grade once I was exposed to what sexual abuse was. When I was 11, I told my mom what happened and she responded by getting angry at me and asking me "Why didn't you tell me?". Of course, I responded with: "I didn't know what happened and I just figured out."

That discussion was promptly shut down and I didn't talk about it until 3-4 years later again, to which it seemed like it was News to her. I think she completely forgot when I told her previously. Turned out my Eldest sister, let's call her Gemini, and my other elder sister, Leo, were molested too.

Leo, in my opinion, got it horribly. She was molested by a cousin of ours for a year continuously when there would be family gatherings when she was 5 years old and he would be 15-17. She told us, Gemini and I, and then my mom, to which at first all seemed sympathetic.

Our cousin (molester) was imprisoned for drug possession and distribution, but he recently got out. Our uncle went to visit him and started voice chatting and he appeared on the screen (No one else in our family knows, not even our dad.)

Gemini and my mom decide to be friendly and say Hi to him and have a conversation when Leo, clearly uncomfortable, was refusing to say Hi or even see his face .

When Leo and I went aside to talk, we were talking about how he was a pedophile and criminal and then Gemini came over, saying "We shouldn't say that, don't be mean, I don't say that about my molester either."

Gemini then goes on to say (to me) 'You were molested once, stop acting all traumatized.' This is the same thing my mom told me several times too (once when I asked for therapy during a highly stressful junior year and once when we got into an argument)

My mom comes over and gets our conversation and tells Leo, "Forgive and forget, let it go, get over it. It's rude not to say Hi to him, why did you have a problem saying hi to him." Gemini then had the audacity to say, 'At least you didn't get raped'. Of course, Leo (who has the ability to stay calm unlike me- when I get angry I cry) just stayed calm and didn't say anything and then went to the bathroom, I knew she was crying.

I immediately started crying. Not only has she said I wasn't a victim, she also made a joke about me getting molested, and I also took an SAT yesterday. Straight after the SAT, we went to Pennsylvania ( I live in New York) and this all happened at my uncles restaurant.

I went to the parking lot and cooled down but when Leo came out to calm down too, I knew she was crying and it was shocking bc she's always mellow about emotions.

This is not the first time my mom said I wasn't a victim, now she told Leo. My mom was completely inconsiderate dragging me to Pennsylvania after a four hour standardized test and refused to drop me off at my aunt's house altho I was exhausted. Gemini, my eldest sister, threatened to slap me bc I was 'getting on her nerves' asking to go home. That got me angry. Bitch, who are you? I will call the cops on you.

But yeah, we never told my Dad. I feel like my mom prevents us from telling our dad because our dad will get really angry and ACT ACCORDINGLY. LIKE A PARENT SHOULD. My mom tells us to get over it. Gemini says I shouldnt act traumatized just because "someone looked under my shirt."

I am so upset, And i know not to confide in my Mom and Gemini anymore. I think I should go tell my dad about EVERYTHING that has happened, but I don't want to start problems.

Am I overreacting?