I Hate Being Lied to

Then it is indeed time to kick her out. You owe her nothing. Her lies were actually very much your concern. If she hasn't paid any rent and you have nothing in writing, pack her stuff, put it outside and tell her to take it elsewhere.

A good friend of mine went through this kind of situation for FIVE YEARS!

If this person wanted to go to school, she would've by now. I have worked my way through multiple college degrees with no help except scholarships, grant money, work-study jobs and some very small loans I paid off myself. People like that use apparently noble ambitions to cover for their unwillingness to make their own way in the world. It gets harder to get rid of them the longer they stay. Give her a reasonable deadline to find a new home; anywhere from a week to a month. Prepare to physically throw her out if you have to. Get your friends to help you. And spend a little money changing the locks the day she leaves. If she leaves any belongings behind, ship them to her new address or to someone who knows her or let her know you will throw away anything she leaves behind. People like this use every trick they can and they stick like glue. Play hardball when the deadline hits. Lock her out if you have to.

Listen to GMG. Work fast and be firm.

Actions speak louder than words my friend. If she truly intended to keep the promises she made to you, she would back them up with actions. People like this soak up so much of a person's energy and resources. Give her one more chance if you want but I think she's already shown you her true colors.

She lied about needing the assist, so she could attend school. She lied about where she was spending her time when she was gone. She lied about pretty much everything and is using greeneyes like a free hotel.