I say she is interested. You got a response right?
Yes is sounds silly but you should hear some of the shit I say when a guy is flirting with me. Kind of brings out a "giddy" feeling. She was probably excited to communicate with you. That and maybe she is sagittarius. We are nutty like that.
Just maybe give it a day or two to write back. There are so many "rules" about how long to wait etc but man, it is all crap. Well like this - I am kinda-sorta dating this one lady and the first time we talked was Nov 2012. After Dec, we lost contact and then Nov 2013 I got in touch and now we sometimes hang out. You never know.
Some people think if someone wants to date, they should be attached at the hip from day one but this is NOT true. People have lives.
Always remember that YOU are the most important person in your world.