I think you might like this book – “Awakening (Earth Evolution Series Book 4)” by KD Jones.
Start reading it for free: http://amzn.to/2cauwWo
This is book 4 in this series. Quinn rescues a human Squirrels who have been living in the tunnel. She ends up living on the ship and begins a relationship with Quinn. But trouble is up and Quinn is needed to take care of it. Book 4 is a great new addition to this series. Lisa