When is kindness enough?

[Ripe]

The walls of divorce are getting closer and closer.
My marriage does not have much time before being inexorably crushed between them.
My family flew home back in July.
My two kids and STBXW are spending their holidays at my mother’s house.
One of my kid’s birthday is on the 24th August and mine is on the 31st.
On the 22 August I am flying home to enjoy my vacations, until 5 September.
On 5 September my family flies back for another year abroad.
To return was the plan when they flew home in July. At that time we were peacing.
As I have mentioned before, my STBXW stopped contacting me as soon as she landed.
July 26 she told me our June reconciliation had happened during a moment of vulnerability. She thinks she has suffered for too long and is seriously considering divorce.
We haven’t spoken or written ever since, which for me is a clear indication she is really going for divorce.
Nevertheless, she has, quite surprisingly, decided to stay abroad for another year. She has told her sister this time she will ask me to leave our home and live elsewhere.
Because of this, for the last week I have been thinking how we would interact between my arrival on the 22 August and the return on the 5 September.
My mother’s house has no spare rooms, so we would need to sleep on the same bed. Would we be conducting ourselves in a normal way, as if nothing serious would be happening soon? Would we be doing a normal “family life”, pretending?
From moment to moment I would feel differently.
I would tell myself “yes, do it for the sake of the kids” and ten seconds later “no, I cannot stand being in the presence of this woman who is about to destroy my family, I cannot share the same space with her”.
Well, my wife has written me last night and made it all clear.
She asked me to cancel her ticket for the 5th September and to book another, only for her, on the 25th August. Yeah, that’s right, one day after my kid’s birthday.
So, now there can be no doubts about her intentions.
She is only staying at my mother’s until we throw the birthday party and only for our son’s sake.
Obviously she does not want to be together one second longer than necessary.
I knew this was coming, but it hurts so much to see it in black and white!!
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I still have one problem: how to live under the same roof with this woman on the 21, 22, 23 and 24 August?
Any thoughts?