Maybe she will set your parents bedsheets on fire and you can say sarcastically maybe you didn't buy her a good enough dollhouse and you provoked her -_-

Did your parents by chance take "Raising a Mass Murderer 101." First thing they drill into your head is "reward any and all criminally insane behaviors. The more psychotic they are the better."

I'd like to know how old she is, considering she got a doll house. that said, I don't know that a good parent wouldn't be getting her help instead of covering it up by saying that the victim somehow instigated the incident... that's some stellar parenting there! p. s. depending on how young she is, this kind of behavior could be covering something up that's really serious.

If she's already a pyromaniac, why would you leave stuff around that you can use to start a fire?? Get rid of the lighters & matches, people!!

You better watch out or the next time she might hurt you

If she actually has a diagnosed condition like that, why are there lighters in the house not kept under lock and key? If you must posses objects that may trigger an episode in a mentally unstable dependent, you should damn well be able to keep them out of the dependent's reach.

He's negatively reinforcing her behavior by rewarding her with a dollhouse.

let's hope they have home insurance.

Destroy her dolls house and blame it on a mental condition you have (if you don't have one then make it up)

Light the doll house up.