My cat ingested an easter lilly, what do i do?

I was recently watching television, when i look to the side and i noticed that my cat was chewing on an easter lillie. I looked online and i found out that they are highly toxic to cats and dogs and cause liver failure. The symptoms included vomiting, lathargy, and loss of appetite. She vomited twice today that i have noticed. She does not seem to be lathargic and i havnt noticed any loss of appetite yet, although her food bowl is pretty full. Let me get to the point. I dont know if there is anything i can do to help her as i honestly could not afford to take her to the vet as much as i would like too. Im keeping a close eye on her but that cant be enough if she is sick.