Most Ma Belles I have seen and those in the awards and Wiz show the longitudinal markings (on petal bases) of malipoense (we call it reticulations in judging). This one doesn't display this trait. But that doesn't rule out the possibility of MB.
Like most above, I do agree it is a malipoense hybrid (due to the deep maroon marking on the staminode) with a brachy of sorts, possibly not even a primary hybrid (see pics of Mem. Margarite Ringler).