Bonaire is a desert island.
Cactus, donkeys, nasty insects, the ususal deal.
How does she like sun tanning? They also have a nude beach, and it is of the European style. Nudity aint sexual, it's just sunbathing with no clothes.
She could locate and visit with "the Bird Lady". (Marlis Seelos) Buy a nifty and very unique mesh dive bag from her at her sail and canvas shop.
http://www.marlissailandcanvas.com/
Or, find the caves in Slagbai Park that have the primitive paintings.
She could scout-out dinner spots far afield (any fool can go to the ones in town). This could take a full week, 9-5. There are miriad places for good, filling cheap eats and cold beers.
Pick your own goat is one of my favorite ways to dine. Have her find Maiky Snak for breakfasts.
The best job? Watch your gear while you shore dive. There is a problem with leaving stuff loocked in your cars at shore dive sites. Most leave nothing in an unlocked car. Your wife could offer an alternative solution.
I really don't know of any high end resorts there. There may be, but they wouldn't let me in. Try Aruba for those.
Bonaire? I go there for diving, as I assume do most others.
Try taking her to Tobago next go round.