Hi Tigerpaw- I was just going to tell you that I am a non-diver as well and my husband dives. In May, we spent a week at Brisas del Mar in West End- husband dove every morning for 2 tanks and never had more than 4 others on the boat- sometimes he was the only one (with a divemaster , boat captain and mate)- he really enjoyed it. I went out with them twice for snorkeling and enjoyed that, too.
I thoroughly enjoyed our time at BDM as well because there was a small beach, a nice pool, poolside bar and grill and plenty of loungers, etc. The drinks and food were all very good and good prices. Non-guests (adults only) come for the bar, pool, etc. so it would be fine for her there if just on a day trip while you were diving- there is some live music a couple of times a week but there were usually not but a few people there at the pool until lunch time or the dive boats came back- great for lounging and reading in peace. I love children- am a retired teacher and have 3 grandchildren- but I loved that it was adults only and peaceful! I also really enjoyed the fact that I felt completely safe and most days walked down the little dirt street a few blocks worth to poke around the shops in West End- I could go for coffee or buy any needed items at the markets or liquor stores, check out the specials at the many restaurants in West End so we would have an idea of where we would go for dinner. There are some nice shops and some fun ones like Rusty Fish. It is super easy, also, to get a water taxi from the dock at Brisas to go anywhere in town if one did not want to walk. Everyone was super friendly and nice- the service at the hotel, bar, grill was excellent. We liked not having to rent a car, deal with parking, etc. I booked once several years ago at AKR and ended up cancelling because I was going to need knee surgery and there would have been lots and lots of steps- we also did not really want to be somewhere all inclusive and not close to a "town".
Now that we have stayed in West End, I don't think I would like to be somewhere more secluded but that is just me. You really ought to fly down and spend a few days!