1. For three nights put a cross in the middle of your bathroom mirrow with soap and then cover your bathroom mirror with a towel or other cloth sprinkled with a bit of vinegar for the night. Bloody Mary does not like soap, vinegar or crosses and if the mirror is covered she will think that the way through is blocked.
2. On the third night keep the bathroom light on with the cloth off the mirror. The light will trick Mary (who is no longer bloody or scary) into thinking that it is daytime and she will move on to another place on the other side of the world and never visit your home again.
3. For each of the three nights say the following prayer kneeling beside your bed. "Lord, Help me to be brave. Help me to get Bloody Mary out of my head once and for all. Banish her from my dreams and help me sleep tight." Amen
4. For each of the three nights, in addition to the ritual and prayer above, drink a very small bit of milk with a pinch of salt, vanilla, and honey stirred into it. This is a special mixture and should be used sparingly. This is an old family recipe that is guaranteed to make you invisable to all ghosts including Bloody Mary. If she can't see you she will not come. If you rub a little bit of this mixture on each cheek it makes the charm work faster. Have one - but only one - parent in the house drink it too and the invisability charm with be even stronger.
Remember to follow these instructions carefully and Bloody Mary will never visit you again.
P.S. The really great thing about the special drink and putting a bit on your cheeks is that it goes into your skin and makes you invisable to ghosts such as Bloody Mary not only at home but everywhere else too.