。
She likes that teacher.
Literal
She [topic-は] that teacher [subject-が] is-liked.
A textbook example of the が-marked object pattern with 好き. Japanese treats 'to like' as an adjective describing the likeable thing rather than an action by the liker, so the thing being liked takes が, not を. The structure XはYが好き ('as for X, Y is the liked-one') is the canonical frame for expressing preferences, and one of the first こんなパターン ('this kind of pattern') beginners learn that doesn't map cleanly to English transitive-verb grammar.