It would never be enough for the King- or most of the men for that matter.
Perhaps Lady Melissa was too close-minded to allow herself to be a man's second or third or so on's wife, but it was some sort of disrespect to her.
Lady Melissa couldn't imagine herself ever marrying a man who already had a wife when he wanted to marry her- or had another lover for that matter, it felt as if she was disrespected and her feelings weren't cared for if a man would ever propose to her when he was married.
Besides, Lady Melisssa didn't want to get any enemies, she'd need people to have a good impression on her- or at the very least, a decent one so she wouldn't be in any sort of trouble in case she needed to call in a favour in the near future.
"All done!"