It sounds a good idea to make sure that they will eat more than one kind of food - if she prefers wet, I would't worry too much, it is better for senior cats anyway with the moisture content. The only one I have seen that does come purely in one flavour is Asda Tiger Senior - that is in Gravy though. I use HiLife Senior at the mo, and that comes in 3 flavours, 2 are chicken based and the third contains it.