Originally Posted by
Diplomatico
Just add her credit card number to your Uber account. Shouldn't be a problem.
In my experience, it works until it stops working. Then you have to delete the card and add it again. And maybe you need to keep telling the app to use Uber cash, rather than charge one of the cards on file.
It sure seems like Uber is trying hard to have your $15/mo/card expire without being used.