Enclosure information (size, temps, humidity, etc.) would be helpful as would the weight and weight change (if any) for your snake.
BP's go on hunger strikes. It is a thing they do. Your BP is now at an age and probably a weight that she might start as well. My female did it yearly for a long time starting at about the same age (she turns 13 this year). She will still skip meals in the winter. She can fast all winter and lose less than 5% of her body weight. I do not sweat a healthy adult BP losing up to 10% of their body weight. Oh, and until it has been 6 months, again, assuming she is healthy, I would not worry.
Handle her only when necessary - cage cleans, etc. Keep fresh water in there and proper temps and she will (likely) come around.
IMO - you are feeding too frequently. Adult BP's should be fed appropriately sized meals every 2 weeks or so. Feeding frequently can cause hunger strikes.
Also, stress does not help. Feeding her when is not hungry is stressful for her. Offer 1X a month until she starts eating.
Now is not the time to try to switch to F/T or switch prey items. Wait until she is eating again and then try it. Once she is, I would try to switch to F/T and rats. Better all around.
Good luck and keep us posted.