Not recommended to let your girlfriend use your credit card, as it could lead to financial problems.
Before you make any decisions, you should have an open and honest conversation with your girlfriend about her financial decisions ,make sure that both you and your girlfriend are comfortable with the arrangement!
It is always important to be cautious when it comes to handling money, regardless of gender. Unfortunately, there are people who will do anything for money, It's important to be aware of this and take appropriate precautions to protect yourself. It is also important to be aware of how money is used in relationships.