Ditto auntie. Instead of getting her a play kitchen, get her a kids' cookbook, some kid-friendly utensils, and make the time in your real kitchen to let her help or play, whatever strikes her fancy. If she doesn't want to cook with you, let her mix flour, food coloring, water, baking soda, vinegar, etc. My kids are forever doing "science" experiments in the sink. I just let them have at it as long as they clean up their tracks.
FWIW, we had a Little Tykes kitchen that we got as a hand-me-down. When my DS was 2 and my DD was 6, we still kept the kitchen around, primarily for him. But my DD played with it as well. It never bothered her that it was "too small" for her. She just sat or knelt at it. So if you really want to get her a play kitchen, just get the one you think is really cool, even if it's small. She probably won't care.