Annoyed

My baby’s grandmother (her dad’s side) bought her a tablet for her first birthday along with headphones. I don’t allow my child to watch tv, I’m a SAHM, she has toys, and I have enough time to play with her and teach her things so no need for tv. I thanked her and didn’t say much else because I didn’t wanna seem ungrateful so the tablet has been put back into the box until she’s old enough to use it. EVERYTIME she calls, she asks what is she doing and ask where the tablet is.. her dad will lie because he doesn’t want to hurt her feelings and say it’s charging but I’m telling him why not tell the truth that we don’t allow her to watch tv incase one day she goes over there and is under the impression that she can put on tv for her. Anyways she now thinks I’m putting things in his head and not allowing him to have a say so but we already discussed it’s no need for her to watch tv plus she JUST turned 1 years old, why does she need it?? Then why would I put headphones on her? She won’t even keep a hat on so what makes you think she’ll keep on those???

EDIT: Not a big deal at all that she got her a tablet which is why I willingly accepted it but how does that translate into me not letting him have a say when we came to a collective decision about a subject he originally brought up. She has constantly crossed boundaries and I’ve told him to nip it in the bud and he has said he has talked to her then she’ll cross yet another one.