Hello, there seems to be an awful lot of young women who can't come to terms with the grief of losing their Mum.  You only have to look at how the two young sons of Princess Diana have coped since she died as its still an ongoing wound in both of them, so I suppose until it happens to us we will never truly understand this all consuming grief.  It is early days, five months is a blink of an eye in bereavement of someone close.  You are obviously being very caring, that shows by your posting for advice.  I still think about my Mum and she was 80 years old, Mum's take a big part in daughters lives and by talking in the present tense she is keeping her memory alive.  Tell her your concerns, ask if she would like some counselling, you could go with her.  Why not print a lovely picture of her Mum off the computer and put it in a frame for her, to show you really understand her feelings.  I did this and have it where I can see it, I say hello to her, tell her daft things, but only when no one is looking!  I hope this helps a little bit, Carol.