Matilda was indeed in the process of advancement, but with that advancement came a suppression of her powers. Her body was remaking itself as it pushed toward the borders of Divinity, and that wasn't a casual process that could be done while she went about her daily activities.
Unfortunately for everyone else, that meant that she couldn't suppress the attacks from the Immortal Realm while she advanced.
The best that she could do was to warn Cara where they were going to be, and have the badger warp space in the Chaos Plane to allow her to [Nullify] the attempts without moving.
That would keep most of them shut, but if a strong enough Immortal or a Supreme Ranked being attacked while Matilda was advancing, they would be let loose on the world without any defences.
Cara rather enjoyed this job. It was a bit like playing whack a mole, as the disturbances targeting the planet would pop up in the chaos realm like a bump on reality, and she could just smack them with [Nullify].
