It may be a Nymphe. I got this from Costco and I kept the box that it came it. It came 3-4 in a package, and the shades ranged from lighter to darker pinks. The single petals with prominent yellow stamens, and the profusion of blooms, and the fact that it is sold through a large retailer makes me think that it may be the same plant. It has tripled in size in three years, so it must be a very easy variety to propagate so cheaply. Cheap or I, I like it because it is my earliest blooming peony.
the thing is Wal mart Costco, Lowes, all those big box stores do not label things reliably, and I believe they flat out make up names sometimes to sell things.
there is no telling what you get when you buy from those.
The one I have labeled Dancing Butterflies blooms and the blooms fade before any of my others bloom.