If you can start looking for her companion now...that would be great,you don't have to wait to be "fully bonded" with your current glider.
Since there is the 30 day quarantine period(fecal testing and wellness check at the start, and then a fecal again in 30 days to make sure no parasites have hatched out since the last test) and then the introduction process of (scent)swapping with pouches and toys which should be about a week to two.
Actually adding a friend can actually speed up the bonding process. There is a comfort and safety level they gain when they have a buddy.
Single gliders can often take longer to bond even if their person spends a lot of time with them.
Once they are introduced and living together, then they can be in the bonding pouch together...no problem.