Problems W/ Add Particle Brush

Just got 2.9, trying to rework an old file. i’m trying to add hairs to a particle system to my jaguar. the paws already have a system but it’s a bit patchy so instead of messing w/ it i want to add a few select new hairs. i’ve added a new system, used the paws vert group for density, and the initial hairs are spawned correctly, as per the pic however, when i use the Add Brush in Particle Edit, despite clicking on the paws the hairs are completely misplaces, coming on her butt :-/

what’s going on?