A tatted-up Tren de Aragua gang hellcat was allowed to take off her ankle monitor a year before she was busted running a lawless, brutal border hotel brothel, sources said. Federal immigration authorities let alleged Venezuelan sex trafficker Estefania “La Barbie” Primera go without the tracking monitor after she whined that her belongings had been stolen, including the bracelet’s charger, sources told The Post. “La Barbie” was later arrested by cops in El Paso, Texas and accused of running a sex trafficking ring out of the Gateway Hotel, which had been taken over by TdA gangbangers, sources added. Border agents...