girl as she is,she is very fond of boxing.

引导让步状语从句时,as意为“虽然,尽管”,通常从句要倒装,倒装的方法是将从句的表语或状语放在as之前,
名词提句首时,不加冠词：
e.g：teacher as he is,he likes Chinese very much(teacher 前不加a或the）.
所以 Girl as she is,she is very fond of boxing.句首不加the