As you say, there's a lot going on in this episode.

You're certainly right that Abby would be at the end of her tether after that time in the water.

I have an inate dislike of any clifftop rescue like that - dramatic licence aside - because Connor is as unlikely to have been able to rescue her in that position as she would be able to with him, especially not with a hand round her wrist like that. There's only one way you'd have a hope of hauling someone in that position and it ain't like that!