I'd heard people say it is a problem, and it isn't. Bodhi, my male Veiled, was never bothered by his reflection. Until he turned 6 months. And let me tell you.. he couldn't figure out if he was supposed to mate with himself, or kill it. I moved him into his adult screen cage about 2 weeks after. I think it really depends on the Cham. And also sexual maturity. If she doesn't seemed stressed out over it, I wouldn't make a big deal of it. Like the others said, she's probably just exploring. She looks pretty young too, and it doesn't bother younger Chams (in my experience) as much as juvie/adult aged.