I’ve heard many escorts do this, it’s not particularly unusual. And I don’t think that she can change the journey as it would be your account / app that would need to be accessed to do so. I’ve used Uber a fair few times but can’t 100% confirm this though.
As for personal details, then that might be a bit more tricky as presumably the escort could chat to the driver and the driver could see your name, email address and phone number and pass it onto her? Although it might need her to make up some story as to why she doesn’t know that info already but I’m sure they could charm their way to that info. This would need to be confirmed by an Uber driver though.