My dad cheated on my Mother

Guys, i’m posting this anonymously, because i’m 100% sure my Mom won’t like I’m sharing this.

So my parents got married when they were 19, they had me and my sister and have been living together for 24 years. He has been a nightmare for these 24 years, he’s a drug and alcohol addict, he has a horrible character and would always yell at my mom, sometimes even beat her! Mom was staying for my sister and I. She didn’t have anywhere to go and we were just little kids, she didn’t have a job, money or anywhere to stay. He has been in prison, without job. That’s how this 24 years have gone by. Now my sister and I live in separate house, they live together and they seem to be in peace.

Few years ago my mom was diagnosed with Cancer and a rare blood disease that needs a lot of time and money to get cured. She has been doing chemo for 2 years and he seemed supportive. We were shocked. But i was happy he was taking care of her.

Yesterday I found out he has been cheating on her since 2016 (when she got diagnosed with cancer). And he has been talking to a “lady”, he has been telling her how he loves her, etc. it’s disgusting to say (i read it on his facebook messenger). And my mom overheard him talking on phone, saying “she’ll die soon”.

Girls, i’m on my edge to not kill this man!!!! I don’t know how to calm myself down!!!! I will get her to live with us and never let her go, i will take everything from him!!! But i want him to die!! To see how my mother is blossoming to a healthier person and then die!!!!!! Die!!!!! I’m in my worst condition!!!!!!