Industrial Magic, book 2: Weaver's Lament
Emma Newman2017

Charlotte is learning to control her emerging magical powers under the secret tutelage of Magus Hopkins.

Her first covert mission takes her to a textile mill where the disgruntled workers are apparently destroying expensive equipment.

And if she can’t identify the culprits before it’s too late, her brother will be exiled, and her family dishonoured...

Titre original : Industrial Magic, book 2: Weaver's Lament (2017)