A little update here. The chick wanted to create a group text right before we had to do the presentation in class and sends an email asking for our numbers (the group is her friend, me and another guy). I send her the number and then she texts me to get her number (instead of creating a group text, since both me and the other guy emailed her our numbers). I just asked her some project-related questions and we created the group text eventually. I wonder if she was giving me a hint by texting me before creating the group text.
Fast forward. On the day after the presentation (yesterday) I text the group suggesting a drinking get together since we did well in the class. Bad news is that only the guy responded

Today I sent another one making fun of the girls for not responding.
This is where I'm at right now, have a little over a month of classes with her. Any advice and comments would be appreciated.