There are many things to consider. I don't have all the facts but I'd say at her age going to college is going to set her back financially in more than one way and the time to recover that will be pushing her in her 50's.
I didn't go to college because I got connected through networking and was forced to grow up early when my parents kicked me out. All things considering I'm doing quite well. It's the cost of living in NYC that is holding me back from saving. But my advice to her would be to consider her current position and if there is room to move up then she should stay. Hope this helps eventhough I ain't much to go on.