forget about depression, I honestly and strongly feel it's not going
to happen.
We have had up to 15 gliders, now at 8. everyone is different, acts different
and interacts with us differently. Your gliders sound normal.
Crabbing is normal, she is scared and is trying to scare away the bad
thing she can hear, see or smell. Most likely a noise you made is what she
is trying to scare away.
"one is seemingly mean to the other" One is going to be the boss of the
colony. the other will not be. sometimes the boss will be bossy.
stealing snacks is common. climbing and sitting with each other is normal.
Our boss (alpha) will grab one by the head and arm and stretch them until
he can get a good grooming going under the chin.
gliders like darkness, most will hide/sleep during day, come out in darkness
at night. also probably hiding cause they are in a new home.
hissing can be spitting for grooming.
you need big cage, glider safe wheel, healthy diet, toys, treats.
AND to spend some of the evening with them. I go in at night about one hour,
they get some treats and hang with me, then they go back to pouch to groom, sleep.
If they stay out longer, I usually stay with them longer, some nights they all run back into pouch in 30 minutes (one will stay with me usually and sleep) so
then I leave.
bonding can take weeks or months, depending on you and the gliders personality.
some gliders bond quickly and some very very slowly. YOU are a big and scary
human, some gliders have trouble trusting you not to eat them.