Is my husbands wife overreacting ? Mother’s Day

I told my son to drop his wife off at her Moms so she could spend Mother’s Day with her mom and my son can spend Mother’s Day with me.

It was a great day. My son bought me the iPad and Apple Watch I really wanted. He even got me some flowers

I told my son he doesn’t have to get his wife anything because that’s not his mom. It’s her kids job to get her something and they aren’t old enough yet so I told him just to leave my grandchildren at her moms house even though I wanted them to go to church with me and my son. Turns out she was mad he didn’t get her anything. Again, why should he get her something? She didn’t birth him.

My son didn’t leave to get her until 9 tonight and she was so mad/upset saying that he should have spent time with her and the kids and he made her a mom blah blah blah. Maybe she was just mad my son didn’t get her anything? Maybe she is using him? She also said that she didn’t feel appreciated? My son literally drove her and the kids to her mom’s. I think she might need help because she is so ungrateful for everything my son does. She doesn’t have to work, she has a roof over her head and my son provides for her. All she does is stay at home with my 4 grandkids that she hardly lets me see. She takes them from me and I told my son he needs to leave her.

My question is, did she over react? I don’t think my son did any wrong by wanting to stay the night at my house and spending Mother’s Day with me.