I have seen remix. Ashi was sooo not a tomboy, neither was MP. Both were very comfortable in their female costumes. I so remember Ashi's totally backless dress in a party. Here the whole characterization is different. Bobby is something who wants to be at par with boys, the stronger of sexes. Plus, i dont think she has any female influence in her family (elder brothers, strict father). Situations like these, girls tend to act like boys. Some grow out of it, some like Bobby dont. Its just her character.
Agreed on the transformation part thought.