Your photo is quite lovely, but I grew Mabou for many years and this doesn't look like it could possibly be Mabou. Color, ruffles, petal width, band, all are too different. Your bloom looks like one I've seen before but I can't put my finger on it. Somehow a Jack Carpenter cultivar is coming to mind.
Sorry, just saying.

Thank you for your feedback! I got Screamcicle, Mabou, and Lavender Blue Baby last Fall, and must have gotten them flip flopped. I submitted a request to move it to the right plant.

LBB In bright sun,that's it!

And it's in it's correct spot now!