Should I forgive my mom?

Back when I was 3 years old my mom left my dad with three children to take care of and a lot of bills to pay, She was like a deadbeat and we almost never saw her, she rarely called us and my baby brother spent most of his life without a mom. For 14 years we had to deal with minor poverty, an emotionally broken dad and an apartment with the worst management on earth. Who was there to walk me to the bus on my first day of school? (Hint: Not her) She still loves us but I don`t share much of the same love for her, She made my life a living hell and I don`t know if I should forgive her.