In my playthrough of Undertale, I first did a mostly pacifist run except for killing Toriel. The second time I did a completely pacifist run.
When I got to fighting Asgore, I lowered his HP until I was able to give him mercy. and then I did. Then I met Flowey and he told me to go back and make friends with Undyne.
After going back to Snowdin, I can't find Sans, Papyrus, or Undyne anywhere. What do I do?