Years ago, back when I toyed with the idea of returning to meaningful work

a colleague recommended the Business and Professional Women's Club:
http://www.bpw.ch/
The locations are under 'Clubs' - looks like there is a chapter in Geneva, Lausanne, Sierre - perhaps those are too far away from you?
Anyway - I've remained a dilletante Hausfrau, so I never got round to joining - meaning I can't say much more about the group or it's activities. But probably worth exploring.