Reading my diary, I came upon this case of my uninvited invasion into someone's private space.
Bonaire, Dec 2014. We got out at Andrea II and already packed our gear when suddenly swells picked up. A couple about 65-70 yo was coming out of water. He got out OK, she was somewhat behind. She took her fins off in time but fell at about knee deep and lay there helpless. He went back into the water to help her but made a mistake of not taking off his BCD and weights, so he was pretty much useless except for taking her fins. When I saw him trying to pull out her integrated weights, I just could not stand this. So I came up, stabilized her by grabbing and holding onto her stage 1, told her to unbuckle her BCD, took the BCD off her and lifted her up to her feet. She could not lift herself up even w/o the BCD.
But the show was going on. Next, a couple about 35 yo was coming out of water. Again, he did OK but she did not take off her fins in time and ended up standing on all 4 in full gear in knee deep water, waves crushing against her butt every 30 sec or so. The guy was obviously trained not to touch female partners, so he just stood there next to her, slightly bending forward, hands against his knees, probably giving her some helpful advice. I figured folks half my age shouldn't need my help, so we left.