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Because of that, she was a little worried about Sundays Marnie-centric episode.

Credit: Craig Blankenhorn/HBO
That included speaking differently and having a different attitude and tattoos and all that stuff.
Williams tried to keep Marnie out of it too, in a way.
They end up kissing and falling into the water, where Marnie lingers.
I had no idea how hard it is to act underwater, Williams says.
And its very hard to breathe so that you dont have bubble boogers.
That proved to be difficult to juggle with acting out the emotions she wanted to depict.
And thats a lot to do with your face in a couple seconds.
Its pretty clear that shesjusttold everyone about the divorce, she says.
The Charlie thing she keeps to herself.
I think its one of those things where shes like, This needs to just be mine.