I am so sorry for your loved ones you lost. I know exactly how you feel because I went through the same thing too. I lost my Dad, then my oldest Sister, then her Husband and then my Mom and it is very hard to deal with it. Like you said, as time goes by it does get easier, and there is no time period for your greif so just take it one day at the time and thats all you can do. Sounds like your Mom is in shock from this. Just stand by her side, that is about all you can do and be there for her.