She knows, but she does not want you to leave. Both sheknows.com and talk.sheknows.com (forum) do not allow for account removal.
You can try this, go to http://www.sheknows.com/mediakit/contact-us for several contact options, including an online contact form. Complain about the lack of an account removal option, and politely ask them to remove your account(s).
Please share the results!