Grandmother help

I need advice, how do I ask my grandmother not to baby talk to my daughter about poop? She gets a little weird about it, like “oh good squirt, get it all out of there, make a stinky, poopity plop” etc, like she’s cheering her on. She does this all the time, and it makes me uncomfortable cause I wouldn’t talk to an adult like that, I don’t wanna talk to a child like that, it’s just unnecessary. My daughter is 2 weeks old, I don’t see this getting any better without my doing something. Posting this in another group as well, thanks in advance!