Good guess on the seasonal changes. It happens to all of mine here every year, especially when things really heat up the activity level goes up and the feeding intervals become more frequent.
I do remember your wait for the cage too LOL, it was a long one! I was VERY close to buying the exact cage but felt I needed a 2 foot tall cage at the least. I wish I had a 3 footer, but we all have limits we have to set.
I'm sure I'll run into some pushing with Wallace at some point. It's the nature of the hobby and I went for the retic, because of the activity level.
I know a lot of these are only 50% SD and some are Jamps and so on but I'm not so sure your girl is way too large for her age or mixed. I wonder if she's a first generation gal?
https://www.youtube.com/watch?v=PhxMtNIOWqE
Check out the 50% SD male tiger here.
It also looks like your girl fits the ranges here.
http://www.vitalexotics.com/reticula...on-care-sheet/
Maybe she's just on the larger end is all.
Try a rabbit and wait a while. Then try a rat, and double back in a short time with a quail. Let her ride for a bit after that. See if some larger infrequent meals followed by some smaller frequent meals, and bit of a famine period changes anything.
Size wise I don't think you will have a problem with her. I think she'll hit a slowdown soon.
I'm more concerned about her pushing. Retics seem quite aware of where the cage doors are and they may push for different reasons. My carpet was pushing, but not for food, she'd just do it, then she'd change her habit and decided climbing was more fun.