How to Ask If Someone is Greek

[ghosttowns]

Hi all! I apologize if this has been posted before. I did some searching but I didn't look THAT hard. If someone could help me out I would greatly appreciate it!!
My question is: how do you ask someone if they were in a Greek organization, for the purpose of recommendations? A distant family friend and two of her daughters went to a particular SEC school. My mom doesn't think they were in a sorority but she is not 100 percent sure. This distant friend is visiting in the near future and I know my mom will see her, but I am not sure if I will. Is it ok for my mom to ask if she or her daughters were in a sorority and perhaps see if she could fill out a rec form? Or should I call/text/email or you have it?


Thanks!