brought her up short

伊坂幸太郎氏の小説 "Remote Control" を読んでいます。パート4，The Incidentから引用します。

They reached the end of the hall and stopped in front of a room. "Ono" was written on a card on the door." They didn't let me in until just a little while ago," Ami said, opening the door.
Kazu lay on his back, eyes closed. Haruko felt a rush of nostalgia at the sight of him, but the bandages brought her up short.

"brought her up short" の意味を調べます。慣用句 "bring one up short" として次の説明がありました。

・Wiktionary: (figurative) To startle or interrupt (someone), causing them to stop or reevaluate what they are doing.: I suppose things can go well for just so long before events bring you up short.
・Farlex Dictionary of Idioms: To cause one to abruptly stop doing something.: The sudden blaring of the alarm brought me up sharply on my way down the hall.
・Merriam-Webster: to cause (someone) to stop suddenly: I was wandering through the exhibit when I was brought up short by a striking photograph.

"bring one up sharply" も同じ意味ですね。