Ahhhh! Yes, my husband was like that, total skeptic, but he is starting to realize that there is more out there than can be explained due to several years of being with me now and witnessing some of the phenomena that happens around me
. Maybe trying an approach of just mentioning the negative attitude i.e. Being grouchy, hateful, etc...not sure if this would be recepted as constructive criticism or if it would start a fight. If her ego is strong and her mind is in the ego, it may be the latter. That would have to be your judgement call. Best wishes to you and your family. I've been where you are in the past. If not careful, it will take a toll on your physical health.