E.J.
The hardest part about a funeral (death of a loved one) is when everyone goes home :-(.
The reality sets in and now there is no distraction of the planning, contacting others, etc.
I think Sadie H. makes a great point of visiting her and offering support after the service.
I agree with the idea of sending a plant or flowers to the funeral home so that she knows you are thinking of her, and follow up with a phone call.
How sad :-(