Have dove with a parentless juvenile once. Was taking an SSI night diving course. It overlapped with a nav course and was at a local quarry. Dive one was first half of nav course. I did not do that dive. Second dive was second half of nav course and first half of night course. A father-daughter team came back from dive 1 with father's nose bleeding. He had pushed through a sinus issue and done some damage. He was out of dive 2. This was not my LDS in the sense that I rarely dove with them, but had known the staff for some time. They knew I was working on a PADI DM with an instructor they knew. I volunteered to be the girl's buddy for dive 2. I knew the quarry well. I focused completely on watching the young girl as we swam. She lead and I followed close beside within 6 ft. Viz was 10-15 ft. I was just her buddy with no official standing.
I will also say that while she did ok she was like a lot of new divers "on a mission". Totally focused on her compass and the task at hand. I could have probably turned into a walrus and she would never have noticed. Don't recall her ever checking her air. Normally I would have checked with her on that during her dive but it was fresh tank, only a 20 minute dive, only 25 ft deep, and I was very close.
I will also say that while she did ok she was like a lot of new divers "on a mission". Totally focused on her compass and the task at hand. I could have probably turned into a walrus and she would never have noticed. Don't recall her ever checking her air. Normally I would have checked with her on that during her dive but it was fresh tank, only a 20 minute dive, only 25 ft deep, and I was very close.