This was obviously written by a person who reads and loves fantasy novels! Expect to encounter vocabulary words - phaeton, foetor, ormolu - typical of such settings. The heroine, however, is pure modern engineer, prepared for everything possible and ready to problem-solve!
Both volumes, I would say, feature a lot of running away from or toward something, costume changes and disguises, and massive uncertainty about who can be trusted. The cast of characters gets pretty well-developed by the end, with nobody purely good or bad, regardless of how they act towards our protagonists. Suralkin might be an exception to that, as he seems to have no one's interests at heart except his own; he manipulates others at will to further his schemes.