Kitten Peeing Too Much?

[Antonio65]

At night and when we can't control her, she stays in the corridor with all her stuff.
This morning (it's 9:30 am Sunday here), I opened the door and one of the first things she did was to jump on the couch and pee.
I caught her in the act, I lift her up to take her to the box, but she was already peeing...