I disagree. I think it's better to offer a larger single item than two smaller ones. If you have a couple left over hoppers, then sure, feed them multiple ones. But I'd switch her up to small mice when you can.

I used to feed multiple food items, but then started feeding single larger items and noticed faster growth and snakes that seemed to have just an overall better, stronger look and feel to them as they were growing. Just my 2¢.