I think if I were more familiar with your posting history, some of the responses you're getting would make sense, including the claims that you have no moral code and the artful suggestion that you're under the bridge waiting for the billygoats. For my part, I can only say, the fact that I'm part of a tickling fetish community doesn't mean that, even when I'm talking about tickling, I think it's all that matters. A lot of the time, someone posts about a situation or a problem that's supposedly a tickling issue, and I'll respond to it more as a general relationship issue, because oftentimes I think that relationships are what's important. In this particular instance, my bias is that to think that the important issue is whether you still have this woman's friendship, not whether you get to tickle her. Isn't friendship part of what you want in life, even if you describe your motives as being about what you want? It came as a surprise to me when you said that tickling her, with or without paying for it, was all you cared about, and I would ask you to think about whether that's really how you feel, and whether that's how you feel about friendships for their own sake in general.
Now that you've posted that latest exchange of texts, I would say that she's giving you ambiguous responses. If you decide that her friendship is what you value, then I would advise getting together as friends and only bringing up tickling if it feels comfortable to do so when you're together. If all you care about is tickling her, then you've got nothing to lose by acting accordingly, though you may not gain a chance to tickle her.
