Answer:
I once read in the book called, "Then She Was Gone," by Lisa Jewell and the whole story was about a mother who was still grieving after her daughter got kidnapped and possibly killed 10 years ago. The mother was sad and gloom and was trying to put her life back together. The problem was that she pushed her other daughter away because she wasn't the one who was gone. She started a relationship with a new man in her 50's and before that, she divorced her husband because he didn't "understand her pain" and didn't grieve more. Everywhere she went she thought she saw her daughter until she saw the daughter of the guy she started a relationship with. She looked exactly like her daughter. Was it just her grieving or was there something wrong? I'm not going to spoil
Hoped this helped :)