Grieving the death of my dad 😭

On November 9th my dad died. We didn’t have the best relationship. I haven’t seen him in months because I was avoiding his wife. This woman has come between my sisters and I seeing him while he was alive. She’s the type who loved to argue and I wasn’t with that. All I asked from her is that have a chance to say goodbye to my dad. She threw it in my face that I haven’t seen him since February and should’ve came while he was alive. She has tried to prevent us from seeing him. She was married to him for less than a year and somehow thinks she’s more important than his three daughters. She had decided that my dad was going to get cremated. She went to the coroners office with her mom (who hated my dad), and her friends but somehow my sisters and I weren’t allowed in. She told us we couldn’t see him but the coroner let us in anyway because after all we’re his daughters. My sister and I were able to say our goodbyes. (My younger sister didn’t wanna go see him because she’s always hated him for not being there for her. He wasn’t there for me most of my life but he was still my father. I got over it. She didn’t though.) He looked so peaceful. I have 11 weeks left in this pregnancy and all I can think about is how he will never meet his granddaughter. So his wife messaged me last night and said she’s excited to meet her granddaughter 😒😒😒 I dunno how to get it through her head she’s not my mom she’s not my boyfriends mom she’s not a grandma 😡 she said she’s going to show up when my daughter is born and it’s just causing more stress. I never thought my dad would die so young. I never thought I’d have any children to begin with. I’m so lost. Anyone know how to make this pain stop 😥😭 I don’t wanna dream of my father every night just wake up crying. Or cry all day. 😭