this is a hard one. if you say "it sounds ok to leave them together" and one
gets hurt, you would be mad.
So I will say. my wife has done 6 to 8 introductions with many size groups.
almost all went well. we did one 8 glider colony added with 3 glider colony, and one female was chased into the upper cage corner at night, daytime sleeping they
were all fine in one pouch, but night time one female would stay away or be chased
by 3 others. they didnt fight, and are in LARGE cage. but after 3 nights we
removed the one female that was rejected.
this last intro was with a STRONG male alpha of 6 glider colony and the
female alpha of a 2 glider colony, they would start to fight every introduction.
the male is just to strong of the leader of the six.
In the end, if they dont fight that is a good start, lunging is NOT fighting.
if you can sleep next to cage and will wake up to check on them or of you hear to
much noise that is good. if they spend most of the night unsupervised then one
could end up hurt. Your female could just be letting the male know she is going
to be the alpha and leader. usually the leader will crawl over the other ones
and expect them to be submissive.
now that they are together, I myself would leave them together if NOT fighting,
and try to be very watchful till several nights without fighting go by.