I (18f) always had a friend birthday party and a family birthday party. My parents weren’t together so dad would always throw a friend party and my mom was very close to her family, and my dad’s who were not close to my dad, so she threw the family party.

When my mom died my dad tried to stop me from seeing my extended family. They fought it in court and won the right to see me. They decided to use one of those days to do the family party for me still and they always invited dad’s family who never reconciled with him.

My dad got married again and had my two half sisters (8 and 7). They don’t have extended family. Their mom was a foster child and she didn’t stay connected to any of her foster families and dad has no relationship with his. They’ve been jealous of the family parties I get to have.

I didn’t tell them either. My dad makes sarcastic comments every year around my birthday when I go to see my family about the fact they throw me birthday parties every year and that’s how my half sisters found out. There were tears and lots of sadness because nobody does it for them. I don’t have a close relationship with my half sisters either so I don’t typically stick around for the parties they have. I’ll either be working or with friends while the house is full of kids their ages.

I moved in with my grandparents the day after my 18th birthday and my dad stalked several people on social media and found photos of the party they threw for me. He was mad but it wasn’t even him that contacted me it was his wife. She was pissed that I’d have a family party at 18 knowing my half sisters would love one but have no one to throw it for them. She told me I have chosen to celebrate with people and live with people who would ignore two little girls who will be my family longer in life than anyone else. She told me I should be advocating for them and trying to make up for everything they lack. And she said having another family party without even inviting them just shows I’m a rotten person and my dad’s anger is justified.

AITA?