My aunt is mad because before my daughter was born I told her that she could watch her while I went…

My aunt is mad because before my daughter was born I told her that she could watch her while I went to the fair this year but now that she's here, I'm way more protective and everything and she's been having stomach and spit up issues so I feel more comfortable with my mom watching her since I live with her and she's with us everyday and helps me everyday. Apparently I'm soooo wrong and now that side of the family is upset with me. It's my damn daughter and I'm doing what I think is best for her.