Am I wrong?

My baby is a month old now, and my mother in law came down to watch our other 3 girls while I gave birth. Well she has been here for almost 2 months now and I do appreciate her help, but I told my partner she cannot feed our newborn anymore because she always tries to force her to finish her bottle when she is clearly full! And it pisses me off. I can't really communicate with his mom because she doesn't speak English and I don't speak Spanish. We both told her several times to not make the baby finish her bottle and she gets so offended and starts saying I woke at a daycare I know what I’m doing. Literally my daughter is making noises and pushing the nipple away because she is full and his mom puts the nipple right back in her mouth when she doesn’t want it. Today was the last straw I took the bottle away and told her no more and told my partner she isn’t feeding her ever again and he does agree. Maybe I’m wrong idk.