Ascension - what about family?

Hi everyone! 

What happens with family. Your mother, father, son, daughter, sister, brother or who ever... when ascension doesn't happen for everyone in the family? How will the experience be for the ones that aren't ready? Will they cross over to the spiritual realm and have the opportunity to reincarnate on a 3D planet? Will they remember what happened? 

Can anyone clarify?  

Thank you!