>>713428641
Because Frisk isn't a whiny, depressed little bitch with divorced parents and a guilt complex.
But seriously though, if you replay Undertale you'll notice how Frisk doesn't do exactly what you tell them to do, they put their own twists on it, and you'll see this kind of behavior in the special ACTs you use in battle. The only time Frisk defies (You) is when you're on a date with Undyne and you select Soda as a drink. Undyne notices your sour expression and makes you choose something else. And in the Genocide run, Frisk starts walking towards monsters in cutscenes without your explicit commands, even telling Monster Kid to turn around so they can annihilate them when re-attempting the Undying fight. Frisk is just way more down for (You)r bullshit than Kris is.
>>713428849
Unfortunately wrong, there's no "two souls", just (You)rs.