Omg mine does this too! You’re not wrong for being annoyed. Mine goes “oh John phoned me and said he was just watching the video of Eliana (my baby) and he said blah blah” me and my partner were like who tf is John and why does he have a video of our child on his phone I get that it’s their grandbaby and they want to share but it’s not right to not ask us. It is an invasion of privacy really 😂 but we have no way to stop it because even tho we’ve stopped sending her pictures she now takes them herself when she’s over and she makes sure to take 1000s each time she’s over on purpose 🙄
I don't think you're wrong at all, I would be upset and annoyed in a situation like this as well, but it really should be your partner who talks to her.