My guess would be she's taking in the view. When I added backdrops to my enclosure my male veil did the same thing and he's fine except now he only can see the kitchen. Lol
I don't see why not if you can get the air to flow. Like illustrated above. ^ If that's all you have and don't really want to spend the money on something else to take up more room.
My father is 84 and his cat is 13 and has been drinking out of the right sink of the his and her vanity in the bathroom. For 13 years continously he has had the faucet set to a slow drip, I've replaced drains twice and recently had to replace the sink altogether. Lol
Nice Chameleon! You can place the cup on top of your enclosure. If you have to, drill a small hole large enough for the water to drip down to your desired location. This can be an easy way for you to know where to place the cup every time you fill it.
I've had Albert for about 6 months and I've never seen him drink. I know he's hydrated because of his sac he leaves behind. I also have had bad luck with the diy drip cup, no matter how small I make the hole water just streams out. I rely on my mist king and the crappy Fluckers cup which lasts...