Cannot Login

I work for an organization where previously one person ran our statewide website through WordPress. Once she switched jobs the task of maintaining the site was given to me. The account is still associated with her old e-mail address, which she can no longer access. I have never had a problem with the site but today I cannot log on using the information I have always used. It keeps saying that the password is wrong and I cannot log in. I can’t even try to change the password because the e-mail is being sent to an address that no one can access.
the page is wwww.realitycheckofny.com
I don’t know what to do.