Are you camping in a tent or in a camper? I haven't gone camping in a long time but i remember how hot and stuffy a tent can get, so that might not be a good idea. Even if you put her cage outside the tent during the day it could still get pretty darn hot and then you'd have to worry about bugs and of course hawks etc that could spot her. A bug net over her cage would help as far as bugs but...
Kirby&Yoshi has taken her birds camping couple times so maybe you could PM her for tips?
No swinging toys in cage while traveling. Secure food and water dishes(probably silo type/water bottle would be best. Make sure you secure any cage doors with something to be on the safe side and also make sure cage is put together really good so it doesn't come apart anywhere by accident.
You can hang broccoli from a string(i use hemp or you can use 100%cotton butchers string) I put the string thru a straw cut to the length needed so bird can't get caught in it. Or you can wedge broccoli between cage bars. Heck you could do it both ways to see what she likes

I leave broccoli in for 4-5 hrs sometimes. Maybe I shouldn't?? Does anyone know ? I don't know how long you can leave baby food in-mine never liked it. But try putting a little in the dish and sprinkle seeds on top. I would let her see you sprinkle the seeds and say mmmmmm and stuff LOL
The biting? She probably just got up the courage to test you. Just keep doin what you're doin and hopefully it will be a quick phase.
IDK what you mean by realizing you haven't been training the right way? All I can say is it takes lots and lots of patience and consistency

I just got a phone call before finishing my post. OOps i gues you're not taking her after all?
Did you find someone to look in on her?