SQUIRTERS, Need Help

My wife and I have a wild sex life, and I’m always getting her to try new things. She knows I love making women squirt and she is trying to learn how to do it herself. Any advice I can give her? Could she be having trouble from a weakened pelvic floor? Every time I think she’s going to get it, she stops herself because she feels like she’s going to pee everywhere. Thanks in advance!