1. The most important thing-
Don't keep asking her about when she will be ready or when you guys will be able to have sex perfectly. Well, it is you who has to understand and shift the whole attention towards her and her condition. So without considering only your specific need in the moment, you should be more concerned to her problem.
2. Don't blame her or make her feel guilty.
I have known people who so desperately want to have PIV sex with their partner but the inability to have it leave them in frustration. Well, it is normal to cry in frustration but blaming your partner for that is completely incorrect.