Unfortunately, you cannot do this without the necessary knowledge. After all, the file must be made for a specific version of the protocol in order for it to work correctly, or the accessories must be manually transferred.
There is a possibility of editing simulations, but this information is very closed and it's difficult to do.
About your question about kamaels wings, it's not the same like cloak "animation". It uses skeletal animation. But you also won't be able to change it so easily, there are many conditions.
innadrile_eva_waterGarden_S.eva_mainroom_05
innadrile_eva_waterGarden_S.eva_mainroom_04
innadrile_eva_waterGarden_S = usx file.
Experiment. But I guess you will need some more changes for the water. :)