が in subordinate clause
syntax115 sentences
Use of が (rather than は) to mark the subject inside a subordinate clause — relative clauses, nominalized clauses, and complement clauses. Japanese restricts は to matrix-clause topics; subjects of embedded clauses default to が. 男性がほれぼれとするような着物 ('a kimono such that men become enchanted') keeps が in the relative clause even though the main topic is 彼女は.