That was quite a bit of terrible information for Erica to take in right then, but the most important part of it (and the part she could get around) was that Kat had been in danger but now was safe. That she had no idea Kat was unsafe made her feel like a failure as a mother.
Wordlessly she led Hermes to sit down in the kitchen, checking out his wounds. "You'll live," she eventually said, her brow creased with worry as she took in all his wounds. On her knees in front of his chair she asked, "no one's coming after my girls?"