Congrats on your first BP, she is a looker.

As far as feeding goes, what is her weight? You generally want to feed BP under 400g every 5 days, anything over 400g is every 7 days, and some feed over 2000g every 10 days. You want to offer prey that is between 10 to 15% her body weight.

Based upon your picture, her birth date, and the size you listed I would guess she is close to 200 - 250g, so you would want to offer her between 20g - 38g prey item, whether that is 1 small rat or multiple adult mice is up to you. Good Luck and Welcome!