I do have to agree with everyone. First of all we do care for you. I know it is hard to believe, I do understand the feelings you are going through. Both my parents are gone, my sister who was my best friend is gone. I have had no one to talk to, I just get blown off, everyone telling me to stop feeling sorry for myself.
Your mother is with you, she is in your heart, your memories keep her with you. Just as my parents and my sister are with me. It may sound weird, but with no one to talk to, I write my parents and my sister. Yes, I know no one would every read it, but it is a way for me to get things out , no one criticizes me about it either.

Hang in there, if you need to talk, pc me anytime