ummm... getting nervous

[torstrum]

My mexican red knee lately took to climbing her terrarium, she has been thinking about going upside down and she stuck her fangs through the screen(and now she's stopped, and is again just on the wall), so this leaves me with a couple of questions
#1 is she liable to yank her fangs out like that?
#2 could her moving around, or even climbing, or her putting her fangs through the screen be a reaction to me?
#3 why is she doing this? I don't mist her, the humidity is 50-60 (usually in winter the issue I worry about is too little humidity, but i'm new to tarantulas and lizards and springs here so Idk) it's about 78-79 degrees(no heat)

 

[Nada]

1)she could injure her fangs or claws on the screen, You can cut a piece of plexiglass and rest it on the lip to prevent this. (just drill holes in the plexi)
2) no, it's not a reaction to you. More likely a reaction to a new enclosure, sometimes it takes a while for them to settle in
3) Brachypelma are desert species in general, don't worry about humidity. I keep mine around 40%

 

[torstrum]

thanks, i noticed she tried again and fell an inch or 2, hope she didn't fall all the way from the top D:

 

[Bast]

If she's got further than that to fall, I would definitely recommend adding more substrate to her enclosure, that way you'll minimize the risk of injury if she does fall again.