Hi there. I have two female sugar gliders- first time owner. I’ve had them since January. Bought them from a reputable breeder (or so I thought). One glider has bonded and is wonderful, the other still bites every time and ALL the time. I am not sure how to get her to stop and to want to be handled like her sister. I understand it takes time- but everything I’m reading says it should only take weeks, not months. What else can I do?

some gliders can take months. I have one female that does not like humans.
but I have 5 others to handle so I usually let her be, I can handle her she may
give me a soft nip.
even with the cage open and giving the glider the whole bedroom, this female,
scarface will usually stay in cage, she will come to me only for treats, and then usually run away to eat it, sometime she will jump to my shoulder to get a treat
and eat it on my shoulder or may leave. since I usually have 5 other gliders
looking for attention, scarface is left alone. but she rarely bites anymore.

I think you can get her to stop biting, but some gliders are very difficult to
bond, it's just that hard for them to get over the fact your a super large animal
that might want to eat them.

I think you need to STOP letting her bite you, and start doing things where she
does not need to bite you. I start with just a quick giving of a treat. LIVE
mealworms are the best gliders love them so much, next best is fish sticks.
giving a treat to a glider without it biting you. the more you work at this the
more you can start to try to pet their back area while they eat the treat.
using a bonding pouch is something lots like to use. 1 or 2 hours a day during the daytime when they sleep, NOT during the night while awake.
Tent time, sit in a tent, let them run and play, LEAVE the biting one alone,
let her roam, let her jump on you and explore WITHOUT PUTTING YOUR FINGERS IN HER
FACE. if she jumps on you.
More interactions with you, NO biting. in the end some gliders are just very
hard to bond or tame. time, patience, persistence.

Thank you so much for the input and advice. I will definitely try what you suggest and just let her take her time. If that’s how she’s happy- then I’ll let her do her thing. :)