My thoughts, 
    Ohpw, the powder with eggs and honey, has all the calcium your gliders need. 
you do NOT need additional calcium.   I would buy powder from critterlove.com or pampered 
glider (wombaroo powder)"   I have read several places exotic nutritions had some 
quality issues.   veggies and fruits (great recipes on critterlove.com) are PART 
of the diet NOT an extra.   
     I have read ohpw can be a little fattening, keep nightly amount at or below  
required amount.   it is usually 1 or 2 tablespoons.  
     I have 6 gliders right now, most are sweet and friendly, only one might give me a small bite out of frustation I dont leave her alone.   but each one is different. 
      you should keep trying with the female, but changes in her behavior will be  
slow most likely.   so your going to need patience.   I would get dried or live  
mealworms from petstore, give them to her on a spoon or small plate, so your hands 
are farther away.   then slowly over the weeks switch to getting your hands closer, or from a low area try to pet her BACK legs or side. (but that is down the road.)  
    gliders are naturally skiddish, so that may go away some but will not completely 
go away, they are nervous nellies.  I think its instincts.   
     during the day I would have room brighter so they know its time to sleep.  at 
night I give mine a very dim night light.   
    I would sit with them at night and talk to them some,  put in bonding pouch as 
the sleeping pouch, so then you can just zip it up and take them out to be with you for an hour or two.   later after you start handling them you can go back to a  
sleeping pouch.  
      start slow, but later my may have to push the female a little to get her to 
except you.   
     get them MEALWORMS  MEALWORMS   MEALWORMs!!!  as your treat.