So last night I went salsa dancing with this exciting HB7 I met on New Years. I went with her, her sister who was visiting for a week, and a few of her University friends. I think the night went very well and I connected great with the whole group. She danced with me the whole time except for when I chose to dance with her sister. There was a good amount of kino between us, but I didn't escalate too far because things really couldn't go anywhere with it being her sisters first day being in a strange country (Korea!). We stayed out till 7 am and everything went great. She then texted me the next day saying how much fun it was.

I want to set up a possible winter hiking date with her for the next weekend (because of distance and work only weekends are available for getting together).

My question is whether it is better to call her and ask her to join me or to send her a text saying "I am going hiking at [x] mountain on Saturday. If your free meet me there at [x] time!" Also do you think its important to try and make it just us, or should I encourage her to bring her sister if she happens to still be here?