AITA for refusing to babysit my grandkids anymore because I don’t want to be responsible for them if my DIL gives me the cold shoulder?

I have a son, Cliff. He has 3 kids. His wife, Gemma, is a salan. She works hours that are unpredictable. But always manages to start work at 5pm. <br><br>Cliff and Gemma have always expected me to be free to babysit their kids with little warning. Sometimes I am, sometimes I’m not. <br><br>I babysit the kids 3 times a week, sometimes more but never less. <br><br>I had a church event one night and I promised I couldn’t babysit and they said it was fine, Gemma got off early and could babysit. <br><br>Then I had lunch with my boyfriend the next week and they asked if I could babysit and I reminded them I had plans. <br><br>Gemma usually always gets off around 3 and will come home and take the kids. She has been late before, or I have to call Cliff to take the kids if she is running late. <br><br>Last week I was babysitting and Gemma got home and didn’t say one word to me. I assumed she was mad at Cliff and ignoring him, she does that sometimes and includes me in the ignoreance. <br><br>I asked Cliff if she was okay and he said she was mad with me. I asked why and he said she would tell me when she was ready. I told him I didn’t want to babysit anymore until she talked to me. <br><br>This last week I got calls from Cliff and my son in law asking me to please babysit but I refused. Gemma finally texted saying she was mad I didn’t babysit. <br><br>I asked her why she went silent with me, I don’t like salan at people. And she said she was mad I wouldn’t babysit for her. I told her I wasn’t babysitting anymore and she said I was being selfish with her. I said no, I just don’t want to be responsible for her kids when she won’t talk to me. <br><br>Now my whole family is split on if I should babysit or not. So AITA?