Words really can't express what you are feeling. It is so hard to deal with times like these, but somehow the good lord above helps us and makes us stronger. Just know that she is happy and no longer in pain. She is always gonna be watching over you, and just remember...if you do something wrong, you will feel the sting of the switch that you remember from childhood. That will be her way of letting you know that she is there and loves you. She will be watching over you till the end man!
Keeping your family in my thoughts and prayers!