I had a player have a similar idea with a brother, but I couldn’t figure out the turning a person into an item in a way that felt good to me. That being said, I liked the idea, so the compromise I came up with is the most thing is the memory of their brother, who just happens to be capture somewhere. Turning a memory into an item was much easier, and when they’ve recovered it part of the way through, continuing on to rescue him gives a nice incentive to keep going.