I have a 5yr old rescue cat. I've had her 2yrs.it took me a year to get her confidence and now she's amazing. A couple of days ago I was about to put flea treatment on her neck and she went absolutely nuts !! Hissing ,growling scratching ect. Since then she's reverted back to being scared and nervous. Every time I move or walk past her she cowers and runs away. I've ordered some feliway to help her. I'm worried she won't settle down.