I've got an actress with a similar skintone whom I worked with recently, and we created an amazingly natural, healthy, glow from the inside blush for her using a small amount of a crimson creme blush (one which was more sheer, not very opaque) and then a raisin toned blush applied lightly over top of that. The raisin tone was an older Milani blush, but anything of that reddish-plum tone should work.