Whether it's a stroke of luck, by design or kismet, Caroline won't ever know. All she knows that as she just so happens to be walking by Poe's house that evening. And by 'just so happens', I mean, walking by it because she's worried about him despite her best efforts not to be, she's angry that he was missing without a word, although not at him. It could have been worse, he could be dead right now, killed by a woman she met briefly before.

None of it matters when she spots him. Everything happens quickly. She spots him. Then the ladder falls backward and takes Poe with it. In the span of a breath, she reacts and he's suddenly in her arms, sort of. More like, he falls onto her and she catches him.

She's got the strength to pick him up but with the force of his body, it's more like she catches him (straight up bridal style) and she stumbles, almost dropping him as she tries to get her footing.