lyravincent,
I don't understand why you can't mention to *Jane that you're going to Timbuktoo to backpack for a few weeks. You could tell her that you're bringing your maps and cell phone in case of an emergency. That's not so bad, is it??
But, no, it isn't safe for one person (particularly one woman) to be hiking alone for 3 weeks without telling a soul where she's going. Unless you want your missing person's case to be covered on CBS, NBC, ABC, CNN, etc. or something like that.
Heck, 30 years ago that wasn't the safest thing for a young woman to do. Now? I hate to sound like Ms. Negativity, but today's society is even more dangerous than it was 30 years ago.
I sure as hell wouldn't want you to be camping out entirely alone for weeks, without telling anyone where you are!!!
Please at least tell a friend and your parents where you're going and bring emergency equipment with you.
Very best wishes to you!! Oh, and welcome to Psych Central!