I hope you manage to find a solution. It IS very reassuring that they are NO-KILL - so at least they should have the resources to at least give her a while to calm down.

I have had a similar experience with Tilly - my stray who had 2 kittens a few weeks ago. For the first week in the shelter she literally climbed the walls to get away from the caregivers when they went into her area. NOW she loves scritchies etc, and will even allow us to handle her baby, and they are extremely hopeful that she will be homed.

Keeping you in my prayers.