As it was mentioned above a few times, if a girl likes you - she will enjoy doing whatever you enjoy.
People crave difference, more often then not, when you get into a new relationship and find things out about the other person in the relationship - you actually find it really interesting, and generally things grow on you also - with my ex, she found my foot fetish strange, but then found that she loved having her feet worshipped and what not, on top of that, if the girl is submissive, which she may be to a certain degree, as she entertains you with her feet and enjoys it by taking photographs for you etc, it could very well turn out that, she may hate tickling, but she loves having it used as a form of punishment/torture in another way, just the same as some are in to being dominated and forced to feel other things, but don't necessarily enjoy what is going on at the time.
The ideal of something can surpass the actual event its self, if you know what I mean?
Either way, it is a narrow-minded view to "dump" somebody because they are not "yet" into something, she sounds interesting and seems to appeal to you in a lot of ways - see where it leads to.
And with your current predicament, it is a good idea to take it slowly, don't be pushy and make her feel the wrong way about it - make it feel natural and try not to act like it is a big deal, the way people ruin things in general, is by making things feel awkward and so forth.