The typical behavior of Sharon Rosales started having a noticeable tonal shift that led to speculation something was going on with her mental health. For starters, Sharon entering into a marriage with her ex-husband, Nick Newman's (Joshua Morrow) father, Victor Newman (Eric Braeden) was the first sign that all wasn't well. Sharon and Victor are widely considered to be one of the worst couplings in the history of "The Young and the Restless." Not only this, but Sharon was going out of her way to protect secrets and lies, becoming devoid of any semblance of honesty. 

Sharon wanted revenge for Nick leaving her for Phyllis Summers, so she altered the paternity test results for his daughter, Summer Newman (then Hunter King), to make it seems as if Jack Abbott (Peter Bergman) was her biological father. Once Sharon was discovered by Phyllis, they had a struggle in a stairwell, resulting in injuries to Phyllis that left her in a coma. 

However, one of the biggest moments that set off alarm bells that all wasn't right with Sharon was the time she set fire to the Newman ranch. Not only was the impulsive move completely out of character for Sharon, but she could've cost members of her extended family their lives. At this point, intervention had to take place and the decision to find out what was ailing Sharon was made.