Years later. Stiles has always blamed himself for Lydia's death, because he thinks that he could have saved her, if he had learnt to control his spark faster. Derek, being the sweet perfect supportive boyfriend he his, reminds him now and then that it wasn't his fault, especially in moments like this, when Stiles want to face the past.
Headcanon: Laura had a tattoo parlor and since her death Cora has been running it. (Yeah sometimes she goes to classes but you know she has a weird werewolf age so whatever (actually I think that that's not true and I think that when the hales were telling stiles about their weird age they were just messing with him, because otherwise what about bitten werewolves? Do they age slower too? (But we know that tw time line is fucked up and that Jeff can't count years)) so yeah whatever)
Also, I like how the colouring of this part came out, I mean, I think it looks like they are in the same place.