I'm not much of a condolence person, Julie. It's life...it's how it works. It is a strange situation that the more family and friends you have, the more likely you are to be 'hurt' more often. It's also strange that should you have but very little family and friends, a loss will (should) hurt you more.
Everyone has conveyed the important message....be strong and remember the good times. Remember also that wherever she is, she will remember you as a person who cared.
Be well....