I am not proud... What I have done is gone on a shop trip and on the boat they paired me with another diver. The shop usually has fairly competent divers on these trips, and a few newbies that the shop baby sits. On one trip they gave me a competent buddy and we dove together. On another I agreed to be buddies with someone and then promptly forgot who it was... it was a group dive so I wasn't abandoning him, but I couldn't recognize him underwater for the life of me....
My most resent trip, they asked if their was anyone without a buddy. I said I didn't, but I was fine that way. They stopped worrying about me by the end of the day. I did promise to stay with the group.
Your diving daughter should dive. The best cure for bad buoyancy is a reef that you respect and don't want to trash. She will get the hang of it much better is she is on dives she is enjoying and know that the survival of the reef relies on her delicate control of her BCD. Besides, reef diving in warm water is so much easier than in a 7mm wetsuit. She will also be your buddy if your wife dives, you are trio, if wife sits it out your daughter will probably never say no.