How would you figure that the person she is talking about is you when you haven't the slightest understanding of the word "mobilities?"
Ok. Your friend used the word incorrectly. She must have been trying to use another word.
I wasn't there, wouldn't know. If I witnessed her saying that, like you, then I might have gotten an idea based off of her tone/body language/attitude/etc. It's more like she is trying to just I believe express herself to open up her social life to become more prominent with people that have certain interests. She might have been saying that she would like to make friends that would benefit her relationship with you or something along those lines.
Well then that was just a wild guess. Can't help you man.