What you say about acceptance is so true! Our cats are pretty quick (at least relatively speaking) to try new foods but their first reactions usually involve bewilderment, as if they wonder what we're trying to do to them.Hi,
I agree, don't offer too many new foods at once. I would do one ( variant/brand) at a time with a break in between of a week or so. Sometimes it takes a little while to accept a new food as food and too many can be overwhelming.
If any are a similar texture to what she ate previously try that while also feeding the previous food.
Often there is a healthier variant that is similar to a less healthy one. For example, chunks in gravy but with real meat & no sugar is still chunks in gravy.
This reminds me, too, that I notice that sometimes the best thing to do with new foods is to just leave them alone, leave the room, so they can just try the food without a curious observer.