We lost DH's mum late last year.She had bee ill for some time so it was sort of likely to happen.DH seemed to be coping quite well at first.He was busy organising funeral and wake and notifying family, work colleagues and her friends.He took some time off work to do things and be with his sister.Since Christmas he's sunk into sadness and isolation. He is back at work but seems 'lost'. I ask if he can talk to me but he answers :he wants to be on his own.How can I help him?