If she wants to offer bareback, so be it. People can make their choices.
I don't think it's a huge additional risk to you, so long as YOU do everything protected with her. If I wanted to book her, that wouldn't put me off, because I would always opt for protected sex.
And in any case, no one really knows if an SP is secretly barebacking in their personal life or with certain clients, even if their comms say they don't do it.