Looks like Cadbury, Nestle, and Dove chocolate also use child slave labor ingredients to make their chocolate. There probably is no such thing as child slave labor free chocolate.
Now that I think of it, Mexico produces chocolate. I just haven’t seen chocolate candy from there. It’s just been chocolate for (muy rico) hot cocoa.
(An off-topic rant— One of the things that is so exasperating about Mexico: they have petroleum, gold, silver, copper, iron, two coastlines, Vanilla, Chocolate, coffee, tequila, beaches, delicious and plentiful food, and yet they still have a lot of poverty.)