Goblin Slayer - Goblin Slayer Episode 1: Three layers within 10 minutes..

She goes back to 1:00 pretty quickly afterwards upon becoming a part of the protag's harem.

Not really, she doesn't show any signs of trauma, if anything she becomes pretty resistant pretty fast (there's only 1 month between the initial mission and the start of the story).

The only thing that mission gave her in terms of longlasting changes were a greater understanding of danger and preparation, and thicker skin.