So I ask of you why does Ranch Dressing exist? I can not think of any food it enhances.
My youngest daughter will eat raw veggies all day long as long as she can dip them in ranch. I would rather have just the veggies, but I approve of her eating them any way we can get her to do so. If I'm at fast food and am offered dip packets (for chicken pieces or whatever) I often take them just so we have some dip to send to school with her at lunch time.
To my understanding based off what you described, she does not like "grass" plus other forms of leafy and vegetable things unless she can disguise said leafy things.
Ranch dressing is what? Mayo (or buttermilk), vinegar, spices so she is probably triggering the tasting of fat, amino acids (thus the unami tastebud), as well as the acidity. When you are assault all of those tastebuds you will find it easy to eat "rabbit food" for you can barely taste the rabbit food.
But there are much better ways to please the tongue than silly ranch dressing Be a good father and introduce her to a life beyond Ranch dressing