AITAH for being mad at my daughter for not supporting her sister and telling her, her heart is cold as ice?

I 54F have 2 daughters, my oldest Priya 22F moved out of the house after a huge argument with her father about 1,5 years ago. They haven's spoken since and my husband is still mad. My husband is a bad partner and cruel when it comes to discussions he is always right, he'll never back down and once he has decided he doesn't want contact he won't contact her ever. My husband has a daughter from his previous marriage who he hasn't spoken to for 10 years. I tried talking to my husband, the whole neighborhood tried, but he still doesn't want to see his daughter. Priya on the other hand is very sad and wants to make peace with her father.

My youngest 20F Sara is a law student who lives at home and has a good bond with her dad. She has also tried to speak to her father regarding her sister and try to make peace, but my husband refused. My youngest hasn't spoken about that matter to my husband for about 2 months now. Priya has been feeling very alone and sad lately, as she is totally on her own. She has her fiancé and her MIL, but she says she still misses her own family a lot. I asked Sara to talk to her dad and we had an argument where Sara crossed her line and told me "When you made Priya I didn't even exist, you did it with your husband right. I live here in your house, where dad pays my expenses, where he supports me and gets up at 5am to take me to the train station when I miss the bus, because I was busy doing my make up. With all due respect I won't destroy that bond, especially since I know, you can't maintain me, my school costs, expenses etc. I would be miserable if I keep pushing dad's boundaries, while living under his roof and this is not my fight, this is your battle together with Priya so stand up for your kids. I love you as my mom, Priya as my sister and dad as my dad, but because of you I can't look at this man like my dad, but my husband. That is not right and go handle it yourself".

I got really mad at her, because even though she might be right somewhere Priya is her sister and she should stand up for her. Priya made one mistake and it could overcome Sara as well. Out of anger I told Sara that she is just her father's daughter and that she has an heart of ice. I haven't spoken to her for 2 days and she also hasn't apologized for what she said. Now I am wondering tho AITAH for saying that to my kid?