Several other posters have noted the grandiosity, self-centered focus and magnificant sweep in the language of LW; placed in context of her depression, it might suggest bipolarity as a central issue. The challenge with bipolarity is in recognizing that the "manic" stage is aberrent, not "normal". The desire to render magnificant and dramatic changes in her life, the self-styling, and the utter self-centered nature of the letter in its presentation of the circumstance suggests the unique "I am center of the universe" that is inherent in what might be an emerging presentation of bipolarity.

Before she engages in creating more drama (the letter does sound a bit like a daytime soap opera, frankly, in its emotional tenor, hidden plot lines, walkon roles, and bizarre confluences of circumstance - the drama of elopement ....the family conflicts, the inappropriateness of her husband as a lifemate NOW, sans explanation, etc......) she needs to take a careful look at her own behavior, with, one hopes, the skilled intervention of a therapist who has a working knowledge of bipolarity. She might also sit down with her husband, who may be utterly emotionally obtuse, and unable to provide any worthwhile comment, or may be aware, deeply in love, and deeply concerned about his wive's "swings". He might, if he is a decent enough chap, and moderately emotionally intelligent, provide her with honest feedback.......I note that this particular condition is sneaky, starts slow and ramps up over time. It can be managed, with appropriate medication. Without it , this woman will be leading her husband/ex husband, child and herself on a halcyon rollercoaster of emotions until both the (ex)husband and daughter can extricate themselves......and will never understand why she cannot sustain a close relationship with anyone, including, ultimately, her own self.

Should she choose to separate, without a job, without a financial war chest, without a concise action plan, she may "suddenly" discover that the courts, in the adversarial nature that divorce ultimately is, will not smile gently upon her grandiose planning, and she will need to deal with the very sticky reality that her husband may not go into that good night quietly, and that she and he are linked, via care of their daughter, until the daughter is of age to run her own life........

And, under the circumstances of the self-centered nature of her behavior, she might consider herself lucky that her husband has not dumped her......