Many thanks both of you, for taking the time to respond.
It is reassuring to know that just because I am not breaking down into tears all the time that it doesn't mean I have a hard heart. It truly is because I believe he - and the others who have passed - are around us and draw near. I am not a developed medium but I am sensitive to spirit when they visit, and so is my husband (who is a more skilled medium than me).
I called my mother yesterday and I think she was upset I wasn't at home from work and in tears like she was. But the words you say - we each grieve differently, are so true. I think she gets that but I also think she is still very angry over losing him: she has a tendency to project her guilt onto others by becoming really angry with them and blaming them, when actually she blames herself but can't deal with that.