Question about wife's fake facebook account?

[Marty]

My wife of 15 years recently opened a secret Facebook account. The name on the account is hers. Date of birth was falsified to make her appear 34 when her real age is 46. In contact info, she input a foreign phone number of a woman who has the same first name. It seemed like a ploy to discourage her family from sending connection requests should they stumble on her online profile. From this account she sent connection requests to six women and 9 men -- all total strangers -- whose names I never heard her mention. They range in age from 23 to 33, but a majority are between 23 and 25. None of them has said anything inappropriate to her nor has she. My concern is neither she nor I have a crystal ball. I want to protect her from being exploited but she thinks I am not aware of her capers. What should I do?