My problem is IF it is to happen I am not sure how to broach the subject with her. it seems to me that we both may want it but if it isnt what she wants I am afraid of ruining our relationship. I am hoping to get some comments...
Just talk to her and see what interests she has. She may lead into a suggestive mood. You will know instantly.
A VERY dicey situation. Had my wife's niece come stay with us while she attended a near-by college. I thought there was sexual tension between us too. Wore skimpy clothing, no clothing going to and coming from the bath in front of just me, etc. When I finally had a chance to speak with her alone she FREAKED out! She said i totally mis-read the situation and was a pervert.
You say you spent a weekend together? THAT, should have been the time to find out. What is going on in your head MAY NOT being going on in hers. She might just think it was 'fun' and safe to tease you...