PetStyle

I tried using tea tree oil on my cat who keeps licking a spot on her belly and leg making it raw and she didn't lick it for a week and we also put a cone on her when we're not able to watch her but yesterday I left home and forgot to put her cone on and she licked it off then vomited early this morning once. She has been eating and acting normal but I read that it can be very toxic to cats if ingested . I am not able financially to take her to a vet at this time and was wondering if there is something I should give her?