Hi, to get a new interesting hobby I wanted to start dancing latin american dances. So I searched on a dance portal for a partner and someone wrote me some time ago. Yesterday I wanted to meet her, but she said she was sick and I would have to wait till next week until we could meet again. Now yesterday, another woman wrote me a message and asked if I was still searching for a partner. Now what should I do?
The "problem" for me is that I know next to nothing about those two, not even their faces and when meeting one, it might turn out that they're HB2 or something like that. Plus I need to decide fast, as the course is going to start in in a week.
Could you give me an advice? I think about asking the second on for a meeting on the weekend and hope she reads the message in time, but what about my thoughts? Should I send a picture of me and ask her for one, too?

meet up with the second one and if that goes well ditch the ostensibly sick one or better yet, get both of them to dance with you. You don't have any responsibility to the first girl who flaked on you whether her excuse is true or not. By the way 75% she isn't sick and isn't ever going to meet you.

Don't ask or exchange pictures. Just message her that you are "assuming she is good looking because you tend to be very picky"