Family Advice

Ok so I have a dilemma and it might take a minute to explain, but I'll try to shorten as much as possible.

My mom and dad got divorced when I was 3. My dad never really talked about it but my mom said that my dad made her feel stupid and when she got pregnant with me in college she decided to take a break from college until after I was born and when she was debating whether she should go back or not my dad didn't support her.

Fast forward a while. Last Thanksgiving my grandparents came up from Florida and my aunt and cousin came up from South Carolina. One time while my cousin was here she said she wanted to punch me in the face so bad because I look like my mom. I asked her why she hated my mom so much and she asked me if I knew why my parents actually got divorced. And I told her what they told me and she told me it was a lie, but wouldn't tell me what the truth was.

Then I started thinking. My mom's family likes my dad more than my mom. She's 41 and she's just now starting to get along with her family. She also said that the people at our old church didn't like her anymore.

I think she may have cheated on my dad. But how should I ask that kind of thing? We aren't the kind of family that talks about actual feelings or that sort of stuff a lot so I'm nervous. Any advice?