My wife is 60 years old. For the last 15 years or more she wash her hands and ask us also including minor children 5/6 years old to do the same activity. When some one comes Guests then she will wash the chairs bed sheets and will wash the floor also. This type of job creates tension in the house. I requested her to consult some doctors but she does not accept. Kindly help how to make her normal human being.