I understand how hard that is!!! I feel for you. Sometimes I get replies from my T to messages that some of the inside kids sent her (that I didn't know about), and WOW I am embarassed or ashamed!! But really, its nothing to beat yourself up for--sounds like your T is understanding, and handled it well-- so that's good.
Yesterday I found out that one of the really young inside kids who cannot write sends TEXTS to my T-- just strings of letters (She knows C,O,J, and A--thats it)-- T thinks its funny.... I think its crazy!