If Poindexter does call for a roll, anything you could roll against Baba would be a minimum of a -6, since you lack background knowledge of the situation (She fears and loathes spirits, -2), and she would consider coming back disastrous (-4).
In the meanwhile, she's planning to walk to the house, preferably from behind, build her molotovs (will this require armorer rolls or can we assume she succeeds in sticking rags in bottles?) and then proceed to set fire to things.
She currently has her claymore, her pistol and her roomsweeper, but she left her assault rifle in the back of the car. Didn't have time to grab it before storming out. She also only has the shopping bag of 10 molotovs. Didn't have time to grab any of the jerry cans either.