Here's how to change the 'Mom to...' text on your profile:
1. Click on "My Other Stuff" at the top of the page in gray.
2. Click on "My Account Settings".
3. Click the "About Me and My Family" tab in blue.
4. Scroll down to the bottom of the "My Details" section.
5. You'll see the section that says Mom to...'
6. Click edit to type the phrase you want to appear on your profile page. If you decide to leave that box blank, it will default to 'Mother of # kids'. Click Save changes.