I believe this to be a Wolf Spider from comparing it to a picture from your web site. I thought this was particularly interesting being that you referenced the Wolf spider carries her eggs for only a few days.
Nice photo of a female Rabid Wolf Spider caring for her spiderlings. According to Audubon: “Female spins a silken cocoon around egg mass, attaches cocoon to spinnerets, and drags it about. It darkens from shiny white to dirty brown. Spiderlings ride on female’s back until ready to disperse.”