Vessel by Lisa R. Nichols

Catherine finds herself on a spaceship alone with no memory of what happened, and even when she gets back to Earth and miraculously
reconnects with her husband and daughter after ten years, the missing time plagues her.  Almost like a case of PTSD, she begins to sleepwalk and have violent episodes as well as voices in her head telling her to do things she knows is wrong.  This starts out as a NASA mission into deep space and ends with a big warning.  Do we really know what is out there and are we childishly thinking we can control the situation if there is something or someone else?  Fans of 2001 A SPACE ODYSSEY, THE MARTIAN, and classic Alien films need to read this.