Sorry but if this was a bloke the shrieks of "leave him!!" and "controlling bastard" would be bouncing off the walls.
I see it time and time again, children arrive, woman who has a decentish bloke a lot of the time then becomes controlling over zealous harridan and proceeds to infantilise bloke. Bloke therefore becomes hapless and helpless in presence of said small children as he's not trusted to make sure they're in bed at 6.58 in the evening exactly or some other bullshit.
Woman then wails and whines that she's so hard done by with no time to herself , "he never helps!" etc.etc, "he gave them dinner 45 minutes late in their blood sugars never recovered" and so on an so on.
It sounds fine, your wife sounds like she has a it of a precious princess complex going on, I would go.
And FWIW I've been in this situation, I used to feel hideously jealous that dh and dd were out having fun somewhere whilst I was glued to the sofa with a bf newborn but it's life and it sounds like she'll have fun.
And I've seen it on here before and in rl, what's the big f**king deal about bedtime??! It's hardly rocket science, yes it can be annoying but it's relatively simple isn't it?? Or does "BEDTIME" take on difficulties of gargantuan proportions in other peoples households??