Someone Has An Issue

We still haven't merged the gliders yet but to be honest haven't made an attempt since before Christmas. There's been little opportunity with M recovering from her February shoulder surgery, but we're starting to think about it again. The latest little "setback" has to do with Sprite. Lately she has been "skunking" M when she takes them out, for example, for yogurt. Gliders can release a musky odor very similar to a skunk when as a defensive mechanism or when they are scared. Sprite's skunking has been very strong and we also noticed she is secreting a fluid when she does it. We thought this was at first just a coincidence, but Sprite did it to M on several occasions, and she does not skunk me at all. They both climb on to my shoulder from the cage every night for the ride to the office. When it'd time to go back to the cage, they either climb up my leg to my shoulder or I pick them up and place then there for the trip back.  I've never had an issue with them skunking me. So, we are trying to figure out why she is reacting this way to M. It could be some change Sprite is detecting in M's smell that we can't detect or something else fairly subtle. It also probably means a trip to the vet to have her checked out and make sure it is nothing physical. Before we make an attempt to get the trio and the pair together again, we probably need to get this figured out.