Kiss Across Chaos by Tracy Cooper-Posey

She is an honorary daughter, he is an absent son…
Jesse Hall, unsung hero of the war against terror, is entwined in Veris’, Brody’s and Taylor’s extended, informal family, but has never understood why. She isn’t a vampire and can’t time travel. Yet they seem to like her—everyone except Aran, who is never there.

Aran is busy with his burgeoning career in Washington and building a life away from the confines of the family. As a time jumper, he will never be “normal”, but he lives his life as humanly as possible while milking time for everything he can.

Both are content. Sort of. Yet time travel defines their lives and when Jesse’s latest house-sitting assignment sends her to Arlington, time itself ensnares them in dangerous complications and they must work together to unsnarl themselves…