They didn't really look like they were vomiting and spasming to me...
Thanks for your professional opinion, Quintana Roo ME!
You can't see three of their faces (to check for vomit) and you can't possibly know if they were experiencing muscle cramps or stomach spasming before dying.
Pesticides? Man you have to be one cold bitch to be capable of killing your daughters at all in the first place, but to do it in such a agonizing way is just plain evil, purely evil.