As a tranny I can give you my somewhat educated opinion.
All of these traits fall under both normal male and normal female ranges. Think of it like IQ and race. While the average for two groups may have a gap between them, the bell curves are going to overlap. A LOT. Lots of cis women have many male-associated secondary sex characteristics. A lot of cis men have gynecomastia. Brand having a lot of male characteristics certainly raises a flag but it by no means proves it either way. Simplest explanation here is she just has some unfortunate genetics.