It is perfectly fine to throw a party and not mention gifts.
But, some guests/parents will call and ask what she'd like. THEN, and only then, can you say what your child might like.
My sister threw herself a 40th birthday party a few years ago. She had it an the Eagles lodge and arranged for gaming tables to be there and gave out chips to everyone. It was a great party and didn't cost her too much. What she really, really wanted was money for an upcoming Disney World trip, so when we were asked from the family an appropriate gift, we let them know. But, she never once ASKED for anything. Some people gave gifts, some people did nothing and some people sent money to her vacation fund. It was perfect!