FerriticMatrix
I mean what would Felicia think if she knew that Alexander was a slave? She seems to think that social position is based on birthright. So she might like the luxurious life Alexander can afford, but can she accept being a mistrss as a noble, whereas the main wife is lowborn. Lastly Alexander is not stupid enough to fall for any of these. Does she expect all men to be as stupid regarding their love life? So her plan still seems half baked.
Also, I doubt Alexander would bed someone like her as he values loyalty and effectiveness above everything else. That's why he doesn't mind putting his subordinates down to improve them if they have made a bad mistake....Not to mention once she finds out he was below a peasant in status she probably wouldn't hesitant to find another to latch onto.