?When he discovers his unborn child is to be a girl, a wizard must track down and capture the villainous necromancer to remove?a curse that's killing his female offspring?
Interesting idea. However, in your post you say the wizard can resurrect people, but that's the point of the story: he can't, so he has to get someone's help. And in your suggestion, at least in any story I've read, necromancers can only deal with people who are already dead, which means that cursing someone living is out of their power(so just replace necromancer with sorcerer, wizard, whatever). Unless it's different in Lorato's version.
As to whether the daughter is dead/about to be born, I don't think it matters much. The stakes are the same: can he save his daughter-and somehow by extension-and the rest of his female bloodline? I can only take a guess that Lorato's idea is that the resurrection is very thing which breaks the curse.
Anyway, I hope this helps.