Free fall into a blue bag

With the pain of her heart, squeezed by a heart attack... memories slip out... spinning a cocoon to keep them with the successive images of the past in her mind, which she keeps in a blue bag in her closet. We learn about her borderline personality, from which everyone who got close suffered, and for which she paid the price in distance and failure. The events of the story take place across intersecting timelines and mental marathons between past and present. A character from the virtual world, with whom the heroine of the story exchanges emails, recounting their pain and breathing through him the air of acceptance and transparency, which the heroine no longer finds in those around her. So who is Mr. Qaf, what is the truth about his existence, and will they ever meet?