Thank you guys so much for your encouragement.
I went today and it wasn't too bad (although I was tired and anxious). My regular counselor stayed the entire time and talking with both Ts was nice. The other T wasn't offended at all when I told her I'd rather stay with my current counselor--she told me that if I ever need her that I can call though.
The talk got my counselor really excited, I think. She realized something about me that I'd never thought of and is using it to give me more 'homework' over my holiday break. I am still going to try staying in contact with the other T though, because she WAS really nice.
I am still so relieved that my counselor stayed with me today and it reminded me that she really does care about me, something I wonder with all the people in my life. She even hugged me today and I'm proud of myself because I didn't flinch or recoil (which usually happens) so now I'm rather certain I trust her very much.
This was an anxiety-inducing experience but I'm glad my RD helped me reach out to another resource.
Thank you guys again for encouraging me!