Board Thread:Questions and Answers/@comment-67.184.252.229-20140224024750/@comment-3445779-20140224070956

67.184.252.229 wrote: I really want to know since no one seems to ship them and since Isumi seems to like Hayate.

Well, she does refer to him as "Hayate-sama", which is honorific used when addressing someone on a really high regard.

Anyway, to answer your question. yes she probably does like him, but not on the same level as Hinagiku, Ayumu and Ruka.