So my Crush Txted me last week after not talking for a while because she went travelling and stuff, and we decided that we should go to the movies and hang out and we had fun then walked around and had some laughs and stuff and we had planned to hang out two days later at my house and bake cookies, it was great! We had lots of fun and just hung out in my room and stuff, and now since I have a small boat that I would take her out in the water and sail around. And I really like her a lot, and I'm hoping she does too. So I'm asking is that I want to take this slow but I want to get with her. What should I do!! X(

What does 'get with her' mean? Maybe you mean get more involved, take it to the next level.
The best suggestion I have is to make it clear as she is leaving that you really had a good time, and to follow that up with a call the next day saying the same thing, and talking about what you might do the next time, and when.
Eventually you tell her not only did you like doing what you did that day but you also like HER.