<human>: Condense the text into a few key points

This could be a lengthy story but I'm going to try to keep it succinct.

Last year my girlfriend of two years (then 1.5) found out about a college in Boston, MA which had a program where she can learn to craft, repair and maintain various stringed instruments (Violins, Violas, Cellos etc). When she brought it up we weren't living together yet and I was all for her going to do this. She even had a close friend who wanted to do a separate program at the same school.

A few months later everything went to hell. Her roommates became abusive, and I had to get her out of there. Two living situations later, she's now living with me. Right now we're better than stable. We're both working full time.

She has been accepted to this school but her friend has not. She has virtually no savings, pre-existing student loan debt, and a dog. 

She's fully willing to take on more debt in loans - $70,000 plus living expenses for three years to do this school program.

I'm very uncomfortable with how much this will end up costing both of us. I'm very concerned that my life will essentially be put on hold for three years just because I'll be helping to support her through this and only be getting by with no financial growth. Worse, I'm a contractor and this August I may or may not be out of work, just a few weeks before she'd be going to school full time.

Am I being selfish by putting my financial plans/ideals above her long term career goals? I'd love to put it off for a year so that we could plan this out better but she seems to think that it's a now-or-never sort of situation.

This problem is becoming a very depressing issue with us and although we are both mostly reasonable adults, it saddens me to watch this opportunity possibly slip away from her.
<bot>: Girlfriend wants to go to expensive school in expensive city. I'd be the sole breadwinner. Very uncomfortable. Am I selfish about not wanting to put my life on hold for three years?