Kelly,
Being honest with your T is important. They can't help you if you don't tell them what is going on. Try not to worry about it as much as possible (I know, that's much easier said than done).
I write things to my T that are too hard for me to just say. He's always thanked me for the note and then we go through it and talk about it. I use e-mail too, and I have told him through e-mail about cutting as well as when I felt suicidal. He has not reacted much to those messages - I wonder if he doesn't want to encourage that stuff. But he's never mentioned hospitalization or anything drastic like that. If he does respond he usually just says thank-you for writing. This week I wrote to him and told him that I was really depressed but not cutting (the only reason I'm not is because he told me not to, and it keeps getting harder not to), and he wrote back and told me not to cut again. He has never been so direct with me before, but just has in the last week since I told him the cutting was getting worse and he seems to have decided that it was out of control.
Anyway, everything that I have experienced as a result of telling my T about those things (in a note or otherwise) has been to my benefit. I think it will go okay for you too. Good luck.

{{{{{{{{{{{{{{{Kelly}}}}}}}}}}}}}}}}}}}}
-Wendy
<font color=green>"Loneliness does not come from having no people about one, but from being unable to communicate the things that seem important to oneself, or from holding certain views which others find inadmissible" Carl Jung</font color=green>
__________________
“We should always pray for help, but we should always listen for inspiration and impression to proceed in ways different from those we may have thought of.”
– John H. Groberg