The suggestion by AndreaTG in her teaser that Annie's mind starts to break plays out in the tug of war the takes place in Annie's mind between John Rogers and her alter ego. All evidence appears to point in the direction that the alter ego is winning, something evident in the last slide showing Annie's face and hair but with the alter ego's pink eyes. This suggests that the alter ego's version of Annie will continue the date with Daniel and attempt to make him very happy which could include anything ranging from total compliance, indulging more groping and kissing from Daniel, and quite possibly a blow job, titty fuck or rear entry, all things Annie has offered to others.
The alter ego is making the version of John Rogers left in Annie's mind come to terms with everything he has been learning about his former self - that he is a coward and failure as a man, husband and father. Ironically, the way Daniel has been acting toward Annie is not too different than how John acted toward Sarah though this has clearly been kicked up a notch by Jake's advice. This realization in itself suggests that any success John has had as an influence over his son has been through the persona of Annie. With the bridge seemingly burned between Sarah and John, the only thing Annie has left is Daniel and she risks losing that with the plan to break things off with him on Saturday, the deadline set by Mike for him not to go public with the news about Annie's true identity.
If the story is winding down, this suggests to me a sequel that follows Annie next year in school, still living with Jane who Annie now begs to live with given she has nothing left with Sarah, still owes Jane a great deal of money, and needs the cover story of being Jane's niece to see Daniel in school. The sequel may well see Annie as cheer captain and perhaps having a secretive relationship with Daniel against Sarah's wishes. Sarah's vigilance in preventing her son from going out with a slut like Annie who she knows may be sucking his cock to make him very happy might lead her to interact with Sarah creating another source of tension. If earning money is still an issue for Annie (to secretly offer support to Sarah and to pay back Jane), we might see her gravitate toward a more lucrative job like webcam sex. This option might be especially necessary if Annie loses her job in the fallout of all that happens at the William's family party on Sunday.
One final thought which I think would be a great way to end the story is if Annie dies her hair pink signifying that her alter ego has completely taken over her persona, turning who was once the Man of House into a dumb sexy teen slut that uses her feminine charms and accomplished sexual skills to get what she wants in life.