Most Helpful Girl
If I could talk to her I'd tell her not to do it. Her not sending you nudes shouldn't be a huge problem, so don't pressure her into doing it if you are. If you're not then keep not pressuring her and if she wants to send some then she will otherwise wait till that happens or just stop expecting it.
Most Helpful Guy
Just have her take it off in front of you. You don't need her to send you pics of her nude. See her nude in person, that's way better anyways