She says she’d do something and doesn’t

Plate which I was planning to promote said she would delete one of her pics on Instagram (mind you I didn’t ask her to, I couldn’t care less. She felt bad about it and OFFERED to delete it)

Fast forward three days, it’s still on there. I’m pissed about the fact that she said she’d do something and ended up not doing it.

What do I do? I really want to bring this up but in a non-needy, non butthurt way. Do I let it slip? I really think people should be responsible and keep their word.