[cypher]

Russian hams don't get wet tail Ruby so one less thing to worry about.

It does sound as though the skittish one got off to a bit of a bad start with the flood but I'm sure it will calm down soon enough.
Cardboard boxes will be fine for playing in.
Once she has the cages & houses sorted things should go better too. Most hybrids take very easily to litter training btw so a small sand tray close to the nest (or in the house if she gets big ones) should work well.
I don't think I've ever actually watched a taming vid so no idea there!
If she just goes slow & steady with the skittish one it shouldn't be too hard, some quiet time & the tissue trick, gently talking while he settles in for now then offering treats, they do tend to find sunflower seeds & mealworms almost impossible to resist & he'll probably soon be coming to her hand.