My T has a full schedule, and teaches graduate-level psych courses in addition. He also has a family. He has managed to get through our weekly sessions for almost 3 years now and has never once answered his phone or texted during a session. He usually turns his phone off, but if he forgets and it rings he'll simply glance at it and turn it off until the session is over. My feeling (and his) is that the session time belongs to the client who is paying for it, and the breaks between sessions are his time to return calls or do whatever he wants. It's his time.

I think you should bring this up with your T. You are NOT being needy, etc. If my busy T can set aside session time for clients, so can anyone else. It's professional and expected. I think this falls under the category of "asking for what you need" and standing up for yourself. Have the discussion. It's all part of therapy, but you are certainly in the right for being annoyed by her distraction during your session. It's your time!!!!