I'm afraid you might be scaring her off a little bit with the health insurance. In Comparis you can check that for 2x28 year old people, with a CHF2500 deductible (the most reasonable option for normal, healthy folks) you're expected to pay CHF ~270 per person. That includes accident coverage for the non-working person.

Regarding housing Gooner has posted a looooong list of househunting websites and resources. There you can see that you should be able to get some decent places in and around Geneve for less than CHF2300 too. For a quick glance you can check comparis.ch, that would allow you to do a "disaster check". I would have to agree with Syshack though...rent is expensive, and paying more will get you a much better place. But don't dispair.

Finally, regarding food for 2: expect to spend some CHF1000/month if you like fine food. If you're not into Bio stuff, and willing to buy some Migros own label and are thrifty with your cheese, wine and deserts...you could expect to cut that to CHF700 or so.

This still leaves you with ~1500/2000 francs to cover electricity, telephone, internet, entertainment in general, clothing and so on. I would say it sounds a bit tight, but if don't plan on getting a car (or a small one that costs little to maintain+taxes+insurance), no kids and not too much travelling...you could get by.

My family and I (wife, 6 year-old and 3 year-old) get by on ~100K/yr plus bonus (generous one, which we gladly spend in travelling and other not-so-small pleasures) with no major trouble, so you can see that those extra 20k a year make a big difference. Maybe some benefits on the side could compensate for the average to rather low salary: car, partial housing, yearly performance bonus ?