How old is your BP? (or how big if you don't know the age?) Adult BPs are more likely to skip meals in winter than young ones...
I'm also not a fan of refreezing prey...it spoils & BPs are not carrion-eaters....their nose knows. (gag!)
Stress is also a factor: how long have you had this snake? how much handling have you been doing? (sticking your finger in her face didn't help any) As already noted,
when a snake refuses, leave them alone for a week or 2 before retrying. Trying too often = stress & more likely another refusal.
Most BPs like to ambush their prey while peeking out of a hide at night (dim light preferable); they don't usually feel as brave to feed when they're cruising their cage.