sweetie.. im betting your mind is making this into something really big and naturally frightening.. and im not saying to not feel that way because that is just how you feel...
but i am also betting this woman is astute(sp?) enough to know that a coffee date can just be a coffee date. Maybe she just wants you to have company instead of sitting by yourself missing T. Talk about other things. If she is with it enough to tap you when you drift i doubt she's going to pin you against the caribou cafe wall and say "pink.. SPILL IT!!"
im not making light of it at all... making new connections is hard.. hell, i find it hard on PC and that isn't even face to face
and you know.. if you decide not to go, it's ok too... she won't like you any less. Neither decision is bad or wrong... do what your heart tells you
much love.. miss you tons - no one but no one is as silly as you!!!