Shvarts, Andrew. Royal bastards #1

Maps on lining papers

Tilla, the illegitimate daughter of Lord Kent, bands together with other outcasts in an attempt to prevent civil war and protect Lyriana, a sheltered, visiting princess whose life is in danger

Tilla, the sixteen-year-old illegitimate daughter of Lord Kent, spends her days exploring the tunnels beneath the castle and her nights drinking with the servants, passing out in her half-brother's room. When they witness a crime that is part of a brutal coup, Tilla and her fellow bastards band together with other outcasts in an attempt to prevent civil war and protect Lyriana, a sheltered, visiting princess whose life is in danger