At this point, I would suggest not only changing the password, but also enabling 'login notifications' and 'login approvals' (under 'Security Settings') on Facebook. That way, if anyone tries to login they will need to have access to your cell phone and even if they somehow bypass that check, you will be notified.
^This. Do this immediately.
Tips on how to lock down your Facebook profile!
Ok, so first of all, you might want to change your name to either a fake last name or change it to something unsearchable (like "Amber Cutie" to "Am Ber"). Make sure that you DO NOT use any email you've ever used for camming for your personal Facebook.
Now, there are TWO pictures that you CAN NOT hide, no matter what. Your profile pic and cover photo. I suggest having these as pics that aren't of you and especially not pics that you have EVER posted on anything camming related.
At the top right of page, click the down arrow. Go to Settings. Make sure your username (
facebook.com/YOURUSERNAMEHERE) is not anything related to your real name or camming name.
Then go to Privacy. The first option changes who can see your FUTURE posts. Set to FRIENDS ONLY. To change your PAST posts, the 3rd option, click "Limit Old Posts" then "Confirm." This only changes the actual posts you've made, not pictures you've posted.
Under the "Who can look me up?" change the first 2 to FRIENDS and the last one (about search engines) to NO. This last one is the MOST IMPORTANT.
Go to Timeline and Tagging. Who can post on your timeline? Friends. Who can see posts you've been tagged in? Friends. Who can see what others post on your timeline? Friends.
Now, for pictures, go to your profile by clicking your name at the top. Click on Photos. Go to YOUR ALBUMS. At the bottom of each album, you should see a little globe. Anywhere you see that, it means the whole world can see it. Click it on each album, and change to friends only. For some (like Timeline & cover photos), you might have to change every picture, one by one.
******
Now, to see what else random weirdos on the internet can see, go to the top of your profile and click the ... button.
Click View As.
At the top, make sure it says "This is what your timeline looks to (globe) public." And click all the buttons, go through, and double check everything, to see what random people can see.
Hope this helps (and wasn't too obnoxious!) I wrote it for my mom too, so I had to basically spell it out for her.