oh noooo...once started on people food its very hard to get them to eat their own. like taking a human from candy to vegetables..lol
and NO lunch meat, that stuff is full of salt and preservatives and is really NOT good for a cat, not even for a treat.
you are going to have to stop the milk replacer so she gets hungry and keep trying different brands of cat food...especially canned to entice her to eat. also NO tuna, that is just for an occasional treat in small amounts, too full of mercury and not good for kitties!!