Menopause might contribute to it, but there's a lot more going on here than just menopause.
A lot of people claim that Chantal has changed, and in fact has changed to an unrecognizable degree.
I disagree. I think there are new factors that amplify her myriad mental illnesses. She is who she has always been, only in a very amplified degree.
Part of the reason for this "change" is because she switched from static video uploads to livestreaming hours a day. She could keep herself together enough to gluttonize a cheese graveyard for 20 minutes. Then, she was free to wallow in her filth, pick her nose and scratch her ass all day. Now we get the whole life, not the snapshot. We get to experience the wallowing and disordered thinking and mood swings in real time, and we grow more aware to her utter lack of friends or activity in life. That perhaps creates an illusion of a dramatically severe dissipation, when in fact it had always been there "behind the scenes"
That said, I believe the amplifying factors include:
YouTube itself giving her a spotlight
Declining health
Constant and chronic THC usage
Sporadic cocaine use
Zero human interaction except for Peetz, which is near-zero
Appalling diet and malnutrition
Intense ressentiment and resulting self-abasement
The "relationship" with Nader
Losing Bibi
Financial pressures
All of these have taken her essential core characteristics (sloth, narcissism, ignorance, obsessiveness, filthiness, gluttony, avarice, et. al.) and pumped them up on steroids, making her decline more pronounced.
So I agree that there has been a substantial decline in mental, emotional, and physical ways that are very real. But I don't think she has changed into a new person; she is who she always was but multiplied by ten now. She is the end result of everything that has always been wrong with her.
As for her ultimate fate? All your speculations are always possible; nothing can be ruled out. But life turns out a lot more boring than we like to imagine, and it may just be a slow decline that leaves her gradually faded and incapacitated. If she lives 10 more years, she'll be the same age as lifebyjen. And lifebyjen is approaching the end of the process of checking out of this universe for good.