Meh. Author took an awesome character and turned her into "yet another female hentai protag". Why is she suddenly so meek and embarrassed? The girl who was raised in red-light district, who never showed any reaction when seeing naked male body, who talked about sex freely and with no emotion... When she thought she was going to get fucked her attitude was basically "if it happens, it happens". And don't forget she made royal consorts embarrassed with her sex-ed lessons. She's clearly a dom, maybe even a bit of a sadist.
I know Jinshi said he's not a masochist be she clearly makes him feel that way... He's the one getting worked up and flustered by her all the time. Tbh, it's more probable that Mao Mao would use her married life as a great opportunity to test some new drugs or use all those courtesan techniques she learned from her sisters... I wouldn't be surprised by her using drugs on Jinshi and raping him in his sleep 😈 For science, obviously.