you may want to put more branches criss-crossing the cage more so she has more of a selection for both direction, height and comfort. When I first got Luna she did the same thing but it was when the lights went out. She was protesting LOL! as her previous Mom allowed her to stay up later. We have both made adjustments 
I just moved her into the big cage on Thursday and I used lots of Kiwi branches & curly willow trying to make it possible for her to get anywhere she wants.
Check out John's pix (see link below) for a nice selection of setups. also, my recent thread about cages has some responses from others with photos.
What are you using for lighting? Do you have basking AND a fluorescent? Could she not be warm enough?? If she went from somehting much smaller the heat now has to cover a larger area. Is there something distracting her? Put yourself in her shoes - ah, mittens (cham's feet remind me of mittens
) and see what she sees. Watch where she is looking when she begins to go up. Does she do it after soemthing specific - like feeding, getting spritzed? hey, I'm just guessing here, but that's what I would do. I am having to make adjustments now that Luna is in a bigger cage for lighting, humidity, etc.
lele
setups
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0.1 veiled - Luna
0.2 green anoles (Jaida, no name)
0.1 brown anole - Jamaica
0.2 house geckos - (still no names)