I think the game would make MUCH more sense if instead of being your (character's) spouse the other char was your (character's) divorced or widowed brother/sister with a kid.
I think this way because with current storyline at the beginning the game gives plenty of reason to your char to go insane. Just think about it:
1. End of the world
2. Followed by unexpected cryo sleep
3. Witnessing death of the spouse and seeing kid being taken away.
4. Waking up unknown amount of time later
5. Only to deal mutated roaches and murderous raiders.
I think that's about enough reasons for the average people to go suicidal.
It is especially strange if you pick female char, because she's a
I think that would've made more sense if characters were siblings (one of them diworsee/widowed with a kid). That way your char wouldn't have forced relationship at the beginning of the game and there would be enough reasons to go looking for the kid.