My best friend's mom died last week. We've been friends since we were young children, so I knew her mom well. We both live in different states at this point in our lives, so our friendship is long distance. I want to be there for her in any way that I can, but I don't know what to say.
Do I constantly call to check up? Or does that get annoying and overwhelming? What sort of things can I say to my friend without sounding cliche or generic?