The bluetooth can't do a thing unless you manually pair with her machine and setup file transfer or something. I'd be more worried about if you have shared libraries setup (which many people do without knowing), anything in those libraries is accessible to anyone on your network. That's worst case though, she can't remote in or anything as RDP requires a password.
no I'm using wifi, so is she , she had my password I don't no how, but both laptops have Bluetooth so I am a bit worried in case she as gained access to my laptop throu hers , I have now changed the password.
bluetooth has to be paired with pretty much everything, PC's included. so she got the network password or was it your laptop password? change either or both if she's not supposed to and i'd block her mac address from the router if you didn't give her access.