Grandmother watching baby issue

I have a 9 month old and my husband mom watches her while we are both working . I’m so grateful that she watches her however she feeds my baby all kind of junk food chips , pieces of cake 🍰 & fried rice .I have complained & she still does the same thing .smh I plan on finding a new sitter my husband is pissed 😤 ! Also we pay her & send food for my sweet Ava