Argentina Women won the match by 165 runs, after posting 188/5 in 20 overs.
Argentina Women elected to bat first and built a 188/5 total, with Maria Lehmann unbeaten 51 off 40 balls, Albertina Galan 37 off 37, and Milagros Bestani 34 off 12.
Gabriela Gaby took 3 for 35 from four overs, while Tania Salcedo claimed 1 for 14.
Mexico Women were bowled out for 23/10 in 9.3 overs, with Francesca Galan taking 5 wickets for 5 runs in four overs.
Francesca Galan was named player of the match.