Should I ask for her phone number or not?

[BunnyDevil35]

I would tell her that, when you leave, you would like to stay in contact and ask if she would be willing to give you her phone number/email address/add you on facebook. You could ask other workmates too - male and female so she can see that you aren't trying anything on.

If she says yes, great! If she says no, accept her decision with good grace - you cannot force her to go against her own ideals.

Good luck with your new job!