She'd have to see or reconstruct the other half to be completely sure, but the mathematics certainly seems sound to slot it into an only moderately unusual wizardry scaffold. It's probably not worth the time to reconstruct the rest of the diagram and port it over to her own system any time soon, especially when she can already cast awaken with limited wish, but that's no call not to copy it down. Though it doesn't explain the badgers - no, you awaken them and then make them juju zombies, obviously. Badgers specifically because they dig, and wherever she operated out of before that was more useful than flight or opposable thumbs?
Some of the insight in this spellwork is useful, actually. It's mostly duplicated effort with what she has, but not quite all of it, and any master necromancer that can also do this probably has some things they aren't offering to exchange with Lastwall. If kidnapping liches of unknown capabilities out of crusader fortresses without tipping her hand about who was behind it wasn't essentially impossible, she'd be tempted to go for it.