What does it mean...

Okay, I have a crush on this girl and i already told her my feelings, and shes just amazing.
Well anyway, she texted me that she was having a serious talk with her friends, and I asked her about it, she said "nooooo"

Does that mean they were talking about me

By the way she never keeps things away from me, we already promised no secrets :D

Why on earth would she tell you she was having a serious talk with her friends and then not tell you what the topic was?

That type of behaviour is infuriating.

I was talking to her and she didn't text for 30 minutes thats why.

does it mean she's interested in me?