Kane's comments on page 35 of Corporate Guide are kinda interesting considering the current relationship. /dev/grrl was sixteen then, which makes her 17 to 18 now.
I don't think Kane would actually go there for a few reasons, Kat being the biggest.
Threesome?
Honestly, I think the JackPoint crowd is going to extract her from her Corporate Hellhole for her 18th Birthday Present. 
I think you're wrong.
I think she'll get an Ogrehammer.
That just might cause a bit of a stir with her whitebread parents who don't know she's a Shadowrunner.
As for why she won't get extracted for her birthday, the answer is simple, while she could survive in the 'real' world, what would her parents do outside of corp-ville? /dev/grrl doesn't seem like the type to ditch her parents and never talk to them again.
However, after graduation she may decide not to take a job with NeoNET, and instead go into 'business' for herself as a 'freelance matrix security and data recovery consultant'. That way, she could still be a runner, and wouldn't have burned the bridges with the family. Of course, maintaining a semi-legit cover takes work, but if she convinced everyone she was a regular corp brat thus far, she could pull it off.