How often should she shed?

I've had my BP for a little over a month now and idk if I'm just being paranoid or not. Either way I wanted to know how often she should shed. I was under the impression that it happens every month but she has yet to shed and there are no signs that she's going to anytime soon. My humidity is usually at 30%, I was told by some members in another thread I made a while back that it should be okay but Im starting to think otherwise. Any help is greatly appreciated. Btw if it makes a difference, she eats every 4-5 days.

Balls shed when their bodies need to. Absolutely not when we would like them to. I have 22 and none of them shed on any given schedule. Sit back and relax :)
I am sure she is fine!

It'd be better for your ball python if the humidity in its enclosure was 50-60%.

Relax, she'll decide when she is ready :) I would say 30 is too low, though.
I would only keep mine at 30 if they had a respiratory infection. Other times I keep them at 50, and when giving signs of shed I bump them up to 75.

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London, UK
1.0 bumblebee (Hachi-C)
0.1 normal (Kali)

As every1 else says she'll shed when she's ready ha my WDB only shed once this year so far i think she's coming up to shed again now. So that'll be two sheds this year thats if she sheds before the years out. All snakes are dif though some shed more often than usual some like my WDB shed once twice a year she is older though. As said just sit back relax and enjoy your snakie she'll shed soon enough.

I would say they typically shed about once a month, but that's if they are growing and healthy. If they aren't growing they are going to shed a lot less. Is she eating, and are you feeding her large enough prey items to see the bump in her body after she eats them?