After receiving a huge vet bill for my kitten problems with diarrhoea and sickness, I need advice!!. She seemed very well...b ut had several bouts of diarrhoea and twice was sick....she has a very good appetite and is very active. She has always loved royal canin biscuits....And now eats a fair variety of wet food....chicken a nd lots of fish....about 1 1/2 pouches per day...topped up with biscuits..... She is indoors only....so not picking up on bugs from outside. Any suggestions?.