How should I go about getting my ex-mother-in-law to remove my kids' names from her facebook page?

I found out that my ex-mother-in-law got her very own facebook page. She uses her real name on the page and her public profile states the names of her grandchildren – my children. I am very protective of my children’s privacy online, going so far as never to use their real names and not putting pictures where they can be seen by the general public. I am very unhappy that my kids’ names are up there. My am very estranged from my ex just today I filed for a restraining order against him and I am not quite sure how to handle this situation – I want their names removed. FYI, I never did get along with my MIL and of course she blames me for the break-up. Any ideas?