I'm saying not.
I've had burms and retics for 7 years. All of my burms that produced clutch did not eat one rodent while being gravid, neither did any of my retics. In the 15 years I've had snakes only one of my female ate while gravid and that was my big female ball python of which I still own. She stopped eating about 20 days before she dropped a 9 egg clutch. But that is very rare.
I had a large female retic look just like your girl in the picture but she was not eating. So I waited and waited for eggs. Nothing. So out of sheer frustration she was carted to the vet for an ultrasound to see if she was egg bound or not. Well guess what? She wasnt those lumps were fat pockets. That's right! Not eggs but egg shaped fat pockets. Nice
Also you said she was housed with a BP male. Genetically I dont think its even possible for these two species to hybridize. But hey stranger things have happened right?
Take her to a good reptile vet and have an ultrasound performed. That should tell you if she is truly gravid or not.
Best of luck.
-----
Christine
Tails With Scales Reptiles
Happiness is biting my snake back!