Undergrounder by J. E. Glass

Drowned by men. Saved by a monster. The last place Alexandra Bailey expects her routine life of domestic journalism to lead is being sucked into icy floodwaters below New York City with a knife in her ribs. Headlines like this happen to other people, but it's real, and she knows she's dead. Which makes the circumstances of her survival as impossible as the woman who drags her from the water. Saved but hardly safe, Alex wakes in the Underground, a world of misfits and monsters thriving below the streets. It's a journalism goldmine. One Alex can't resist digging into after learning her beastly savior is Leanna Farrow, adopted daughter of an infamous and "presumed dead" scientist. But Alex's curiosity, coupled with her rapidly developing feelings for Leanna, put both women in danger when Alex’s inquiries pique the interest of a powerful family with bloody secrets connected to the Underground. If Alex wants to unravel the secrets of the world below she'll have to walk the razor's edge, but some mysteries are better left buried.

No Rest for Wicked Thieves by Jonathan Pembroke

SFFOasis

For Kayla Tanglebrush--the fabled thief known as the Nightcat--life just doesn't get any easier. After botching a high-profile job and seeing other opportunities dry up, Kayla is forced to take on the most dangerous task of her career: infiltrate the remote fortress known as the Ice God's Retreat and steal the Rime Diamond from under the nose of the Lord of Frost and his worshipers. Except ... she has no idea how she's going to do it. With few options, Kayla is forced to accept the help of a naive but powerful priestess and a dashing rogue. Kayla's past and present collide as she and her companions rush towards a perilous confrontation. And all the while, greater forces stir and awaken. Pieces are moved on the cosmic chess board as the Gods watch ... and wait ...