Planted Tank Enthusiast
Join Date: Sep 2009
Location: Kingman, Arizona
She may be stressed by the new additions; she may be sick; or she may be recovering from having fry. I've had some livebearers that would lay around for a day or two after dropping their fry, even though most aren't bothered by it at all.
What size is the tank?
How heavily decorated/planted is it? She may not have enough places to hide when she needs alone time.
Can you test your water for ammonia/nitrite/nitrate? A spike in those could make her sick.
The gourami may be intimidating her--I have two gouramis and they are nasty bullies. Keep an eye on him and see if he picks on your molly.