I just checked my phone as I thought that I knew my T's cell number but I don't have it in my phone. I am really not a phone person and feel like texting her would be kind of intrusive BUT, I do email her if I need support in-between sessions and she always responds with something insightful. If I were suicidal I do think that my T would allow me to text her and I would take her up on it if I were suicidal so it's a good thing that you have that option. Don't be afraid to use it, sounds like she really cares about you!