She's saying it's farcical to label sexual disinterest as a manipulation. You have to be specific on that one because there are so many factors at play. The way you wrote it made the assumption that it was an attempt at manipulation rather than fatigue, honest disappointment, menstrual cramps, anxiety, depression, or just a natural down cycle, etc.

Libido doesn't work like a light switch for us. It's not like the tide.