why is she incapable of telling the truth?

she will lie right to your face knowing she has a gang of simps that will just dogpile if you dont play along with whatever lie she makes up that day.

its like a real compulsive thing she does she cant help it i guess? or maybe shes really just that evil inside she thinks its funny to lie about stuff?

surely shes not like actually delusional to the point she believes her own lies?
thats why the motive seems sinister and i am 90% sure shes trying to get me to kill myself since last year