How well do you know your characters? Have you written a detailed backstory for each of the major characters, such the ways their disorders have shaped their lives, their family/ cultural backgrounds, the defining experiences of their lives as well as their strengths and weaknesses, what they like and dislike doing, and how they go about escaping from the more onerous pressures of real life? This wouldn't necessarily included in the text of the story itself, but for you, in order to inform your writing. Your novel seems like it's very much character-driven, so the more you develop the characters for yourself, the easier it's likely to be to create stories for them. That might make it easier to determine the direction of the story. Of course, you may have already thought of this, in which case my advice is irrelevant and you should feel free to disregard.
It also might be interesting to have a chapter, or series of chapters in which the women share stories of experiences, positive or negative, that have to some extent determined the direction of their lives. Would some or all of these characters also be facing present day dramas which would require them to overcome, or at least come to terms with psychological scars from past traumas? What steps might each of these women take to move forward in her life, base on her personality, the nature of her disorder, her strengths and weaknesses, and likes and dislikes? What steps might these women take to support one another? Also, what sort of activities do these women enjoy doing together?
Once you have found answers to the above questions, it might be easier to proceed. Or not. These are just my humble suggestions, and I'm a little rusty in terms of writing stories for adults, as my focus in recent times has been stories for young children.
In any case, I hope I was able to help at least a little.
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"And I find it kind of funny, I find it kind of sad./ The dreams in which I'm dying are the best I've ever had."