When I held her to take a picture some partial scales flaked off the last 1/3rd of her body. It seems like her skin is really dry. The humidity has never dropped below 45% though, and now it's up to 60% or more during her shed. What's the deal?

Edit: Thanks for the answers, I guess I thought 50% was enough for normal times and 60% was enough for shed. I'll try to bump it up. What about the flaking scales though? Uughh I can feel a bad shed coming...