I think the statement is more for folks who may have happened across her profiles or the website itself and would be rightly confused if they saw a big change. I've seen similar episodes with friends and it's extremely hard to get them out of it, if at all, for reasons noted in the post. I hope they get the help they need.
There have been a number of studies that specifically linked advanced "artistic" personalities with increased risk of psychosis and other breaks from reality.
I had never heard of Toki Pona, and I find the project amazing!
The only other invented language I have heard of is esperanto. Which I have always been interested in, but never studied.
My heart goes out to the author of this language, I hope they are able to find their way back. There is certainly a community that hopes to help and support them.
This is much more than many distressed people have to hope for, and I hope they are able to find solace in that support.
The human mind is the most beautiful powerful and yet fragile thing. Without it's quirks humanity would have been robbed of so much. But the suffering can be very very painful. It's a beautiful ride we are all on, I know it's hackernews but remember to be nice to people! Ya just never know what someone is going through