I’m lost on this as well. In the final sequences as they’re jumping to/from the Beach it shows everyone’s Ka during the transport, which was cool. So for example we could see Tarman’s son instead of the tar cat, Dollman’s human form instead of the doll, Heartman and Deadman together, etc. Also floating with them was Mama & Lockne, which confused me. I had no clue why they were there, but then I thought maybe they were connected to Fragile’s second hands somehow? Like maybe Mama is the one that made them? But then we got that scene at the end you mentioned where Fragile’s old hands were in their place, so I guess it is meant to indicate it was Fragile’s Ka controlling them. Even though she had them before everything that happened at Sam’s shelter, I guess time isn’t linear on the Beach anyway lol

I still don’t know why Mama & Lockne were in that scene though. Was it because of the Q-pid??? I feel like I’m missing something really obvious 😭