How to use "dismayed" in a sentence

killed." The bitterness in her voice dismayed her because it revealed how little she had healed

Bob shook his head in agreement, frowning, as if he was dismayed to think that he could be mistaken for a common thief.

Her sudden gullibility dismayed and alarmed her, because it indicated that the decision to have Danny's body exhumed was not having the stabilizing effect on her emotions that she had hoped it would.