Why do these things happen V

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I know no one really has the answers to these questions but I figured I would ask anyhow. These are all things she has done, or said over the last week or so.

Invites me over for dinner almost nightly.
Tells me I need to move on.
Has either told me to bring my laundry over, or taken it when at my place.
Tells me she has no plans to file for divorce. Last month was dead set and doing so.
Asked me questions about myself last nite and seemed like she cared, as in: how is the drinking going, how are dealing with your past now, etc etc.
Bought me a new swimsuit.
Acts like I don't exist the rest of the time.

She wonders why I have that confused look on my face half the time.