I've been all over town talking with Tricia's professors (she was a folklore student at her university -- I told her to go into something 'useful' but she didn't listen) and they said that they hadn't seen her for about a week. They... seemed concerned. It's not like her to be missing school.
I do want to thank everyone for decoding that for me. Like I said before, I have no idea about any of this computer stuff so weird numbers creating an e-mail address makes as much sense as anything else with Tricia's disappearance.
Apparently the code made this: firstname.lastname@example.org
I'm going to e-mail them to see if they can give me any information. Maybe these are the people that Tricia wanted me to ask for help.
Oh, and for those that noticed it? The back of the paper just said this:
En On Tutors