Lol I know what you mean. I had something similarly with my daughter in law but instead she went along to learn. She was subconsciously putting fear in my grandson for things she didn’t consider safe. She never told anyone she couldn’t swim but sensed it. The brave girl went white water rafting with my son and his friends with no life jackets and couldn’t swim. They got a bit wild and someone put a hole in the raft she said. Now she can swim. She learned when I taught the grandson. The rest was my youngest daughter who must of been a seal in her last life. Even got him to go on those crazy water rides. I didn’t worry about him because if she can put a 70 pound dog under her neck by swimming under it and swim her in while calling it a pain in the neck in a cold river with strong currents she could handle a little guy.
As far as turning them into another RNO that may be taking it a little too far to the extremes lol