Sounds like your'e giving her plenty of variety already, and its great anyway that your'e giving her some fresh food too with the steamed chicken. You don't really need to feed dry food if she's doing ok on what she's already having.
Ordinary dry foods do nothing for their teeth (just shatter on the teeth with no abrasive action at all), but the dry dental biscuits are made to have more of an abrasive action, so you might want to think about giving her some of those as treats every day maybe.