You could do Argentina or Chile especially if you’re willing to do shared housing such as a room in an airbnb or a hostel. private airbnbs are 40 to 50 usd a night for something really nice. I would definitely consider them. I’m in argentina now.

I’ve spent 6 months in latin america, and if she is willing to stay in any type of shared accommodation like a room in an airbnb house or a hostel, then it’s totally doable

Argentina or Chile!