My mother doesn’t respect how i raise my baby

So my mother and my daughter(7 months) have a pretty great relationship but my mother doesn’t respect me or how I’m raising my daughter. She gives her soooo much junk food and juice when I’m not around. She’s tried to give her melatonin when I’m not around so it’ll be easier for her to sleep.l after i said no. She’ll also try to take her from me while I’m trying to put her to sleep saying she’s not sleepy when i clearly know my daughter is sleepy. And when i try to do something a certain way with my daughter she has the nerve to tell me it’s wrong??? Like... i know what’s best for MY daughter and. She thinks because she’s had 9 kids she knows everything. She doesn’t respect me as a mother at all and it’s starting to piss me off. No matter how much i say “no” i don’t want to do that or “no” i don’t want her to have that she keeps pressing trying to tell me why i should. Then i find out later that she’s done something against my wishes. Or if i tell her i don’t want to come over her house she’ll pop up at mine uninvited. I get that she loves her grand baby because it’s her first and she wants to make her happy. But i have my own way of doing things and she refuses to respect them. It’s sooo annoying how do i respectfully tell her to piss off??