Kraken the Whip

Penny thought life was good until her ex-boyfriend comes into her office with his current girlfriend—her boss—on his arm. When the new girlfriend leaves them alone for a minute, he attacks with alarming brutality, but Penny is the one who loses her job.
After a few weeks, she gets a lawyer, who tells her she can call anytime. So, when she survives an attack by her ex, she calls him, and he meets her at the hospital.
Jax is an alpha with extras, and his situation is similar to Penny’s. He has one appendage that she is aware of—his five-year-old daughter.
Over the course of a week, Penny has to go from nothing to being offered a pack-style living arrangement with Jax, his daughter, and another alpha who also has an aquatic adaptation. If she says no, they will still help but not give up, and if she says yes, she can throw a five-year-old’s birthday party. It’s no contest.