You know it's gonna happen!
That nuke was far away not to incinerate everyone...but close enough to cause radiation burns.
I think the baby got tenderloined, and your holding your burnt spouse in your charred arms, as the lift goes down.
Your spouse being completely devistated about the dead baby, cries her last breaths as you feel your vision failing, blurring.
Next second, your on a gurney being brought to the infirmary by the vault garrison, escorted by the Pip Boy doctor. You are quickly treated with an ungodly amount of stimpaks and anti-rad. "Stat.... CLEAR!" *Booomph!*
Emergency protocols are enacted as radiation leaks are detected coming from the vault elevator. Doc tosses you into Cryochamber to stabilize you and protect u from further radiation exposure. Doc goes away to help as many poeple as he can, and fights to contain the radiation. He eventually succumbs and dies next to the Pip Boy table....
How do you think it's gonna play out?