She also stated that the guy sat on top of her chest to cut her. If she was unconscious then how did she know that?
The “B” looks like it was carved upside down, consistent with a “mugger” holding her face up and carving it looking at her down from the top of her head.
It still does not pass the smell test.
(Maybe the mugger was a Boston Red Sox fan, upset that they lost to the Tampa Rays. Hence the carved “B”) /sarc