Basically, she's trying to blame random bad stuff - Mexican police actions in this case - on NAFTA. She doesn't seem to understand/know much about what NAFTA really is. It's an agreement and laws passed by the various nations: i.e. the Mexican government participated in negotiations and approved it by whatever their constitutional process is. If she and other Mexicans dislike it, they should take it up with the Mexican government.
And BTW, NAFTA went into effect in 1994, not the 1980s. It was signed by (lame duck) President G. H. W. Bush in late 1992, and the law was passed by Congress in 1993, i.e. during the first year of WJC's MalAdministration.
nads also seems unaware that many in the US - across the full spectrum of political views - hate NAFTA as hurting US businesses and workers. So I'm not sure how much sympathy her the-US-is-oppressing-Mexican-workers-through-NAFTA narrative is going to generate. Obviously at least some DU-folk aren't buying her I-shouldn't-have-to-prove-connection "reasoning".
If nads hates the hellhole Mexico has become the past couple of decades - worse than the pest-hole it had been - she should move back and focus her energy and talents on the pols whose screw-the-US-and-the-Mexican-people ethics and (non)actions have made Mexico the hellhole it is today!