Let's bring something into focus here.
When you're not a ticklephile, tickling is a form of spontaneous horseplay, much like using the supersoaker or a whoopie cushion. But when you are a ticklephile, then tickling is a form of having sex, and having an obsessive desire to tickle someone and strategizing for the opportunity is the equivalent of having a sexual attraction. That said, you need to think really carefully about what you're doing, because if you tickle her and are getting turned on by it, she may well be able to sense what's going on, and depending on her predispositions and perspectives, your relationship with her may or may not be still intact when the tickling is over. And let me make clear, the source of concern is the fact that you're strategizing about it. If you gave her foot a spontaneous little tickle at the right moment, it might well not cause any problems, but when you're strategizing, you just need to be careful.