HannahI am so deeply sorry for the loss of that childyour lossyou lost her, too. Tell them you are sorry for their loss and that you are thinking of them.Even that much will remind them that you are there. "Sending healing prayers and comforting hugs. I am so sorry for your loss. Be sincere and express your feelings of sympathy. Please know that I'm here for you if you need anything. We would like to extend our deepest sympathies and sincere condolences at this most difficult time for you and your family. Don't say things like "Be strong" or "You will get past this. " Instead, acknowledge their grief, and remind them how much they mean to you.