She's already vouching for Maddie in the previous issues despite everything Maddie is doing. She's the one trying to assure Scott and Jean that Maddie really has changed even as demons possess inanimate objects and attack civilians across New York. The way the story resolves ends up proving her right to vouch for Maddie despite that not making sense given what Maddie has done. If she hadn't been defending Maddie in this very story I wouldn't make this suggestion, but since that's what Duggan had her doing in the previous issues, let him pay that off instead of ignoring that she exists for the entire issue accept for 1 throwaway line at the end.