After bathing my dragon each time has began trying to fight her reflection, no other times, just for about 5mins after a bath. Is this common? Is she just showing off and getting jealous of herself?
Generally that behavior is them being territorial and is fairly common when they see reflection and are on high alert. If you can reduce the reflection as much as possible, it may help prevent some stress, but I don't think it is a problem in the long run.