Maybe she could put her sh*t aside 'til he gets back.

It was difficult to experience, even knowing that her behavior was just part of the big analogy that this movie was. Groan, eyeroll, fast forward.

Astronaut on an arduous potentially world changing mission with incredible personal, psychological and physical challenges to deal with.

you're new to women, aren't you? :D

just kidding there :D but yes, I agree with you, but also I get it

I get what you're saying.

I think it was their second attempt at a child as there was a miscarriage flashback, and I think she wanted to see the baby through together the second time, but he had to go off into space.

But yeah, not the best person to fly the mission with that situation back home. Maybe they just couldn't find anyone else after having trained him for some time before they fell pregnant again.

"Maybe she could put her sh*t aside until he gets back"

So long as she resists the urge to mimick Amanda Bynes, by smearing it all over the walls of Embassy Suites. The staff will no doubt be extremely grateful

You are acting as though this was a real woman and not a literary device . . .

She behaved that way because that is what the writer chose as his motivation in the story.

This wasn't anything new in their relationship. His obsession with his career had taken him away on long missions before, and he had broken promises to stay home more than once. She had already lost one child, and was alone and pregnant again. She'd had enough, understandably. I agree, she could have kept up a cheerful, supportive front until he was back, or dead, but without imperfection of character we'd have no interesting stories.