I'm not a parent, but I will present the pragmatist's answer. Try it to see if she likes it and does well. If it's too much for her, you can drop her back. I'm pretty sure the school system would let you do that to keep the stats up for the grade she skipped. If she excels, you have given her an opportunity that may not present itself in the future. If she drops back to the suggested level for her age, she has lost nothing.