Board Thread:General Discussion/@comment-32182236-20190716014521/@comment-32182236-20190802181639

"Yeah but it's hard to believe that all monsters were present when Chara died on their bed."

That particular argument is the argument from incredulity. Just because it's hard to believe doesn't mean it's not true.

Because it's really not that hard for the narrator to assume that Chara was in their own bed. And Toriel and Asgore were clearly there, so they already knew this fact.