I don't think Mr A ever loved her sha. Someone who loves you wouldn't think to exploit your seeming weaknesses or issues that you have had to deal with even before you met them. Mr A just saw a chink in her armor and did not fail to take the chance to exploit her, to control her and to feel responsible for the praises she would receive after getting beauty procedures.
And leaving her husband for a guy who would probably not have looked at her twice if he had met her before she got surgery done, i don't know? Seems like she also did not love Mr A from the start. She probably thought she loved him because of the validation she received from him when others were bashing her. It's a paradox really and I don't think I would be in the best position to pass a judgment on this.