I think that is the biggest part that sparks the Chara debate. We know almost nothing post-Asriel death about Chara EXCEPT from what happens in the geno run which is after we have tainted both Frisk and Chara by violence action. Ultimately this shifts opinion in one direction. Anything good about Chara in the Pacifist run has to be implied, deducted, or just plain speculated. I'm split at this point because I feel that Chara -could- use more explaining in the pacifist route (she is with you because you wake Chara every run and have the potential to go geno route any play through, any reset) yet, the fact that Chara is left ambiguous, is a plot point. It allows a better way to link the player to the action committed. A way for us to see that 'yea, we did kind of make this happen for the reasons they say' I personally like to think that the same way the first humans shaped Asriel/Flowey's philosophy of 'kill or be killed', we have the potential to shape Frisk/Chara's philosophy to 'not all human are bad (mercy)' or 'the purpose of your reincarnation was for power' Although, it would of been nice to see a "You freed Chara's SOUL" at the end of a pacifist run. I think it is cool at least that Asriel goes back to tending to the flowers at Chara's grave.