Are you sure there are no strong feelings about this person...?
(I'm kidding) But I can't help but notice you sound a lot like myself, I was always afriad I would hurt this "special someone" but as a Nidan he should be able to handle it...
The other student are afriad they'll hurt me, I told them to go full force and I'd let them know if it was too tough.
So if I where you I would tell her to let you know if she isn't comfortable with your speed, etc. It also shows good manners anyway...
