What do you say to a family when they are suffering through a death or when they are remembering a birthday, anniversary or other event in their life?
Believe me, there are no words. Your concern is what speaks to them and that will come across no matter what you say. Caring goes beyond any words.
Do not let “not knowing what to say” stand in the way of showing someone how much you care. Do not let a “loss for words” keep you from showing concern.