Mexican American Thinking of moving to Guadalajara

Would expect a lot will depend on your focus with psychology and level of degree.
Would expect that at 25 is very tight for a PhD but you could be very mart or newly "minted". My daughter is a pediatric neural psychologist with a pretty balanced mix of clinic patients and research. In her case, the target would certainly be the leading children's hospitals(she is now at St. Jude's in Memphis) and would expect such a facility in Guadalajara.
Picking up on earlier post, another good approach would be to research multinational corporations in Guadalajara as you would bring an interesting combination of benefits. You are really an expat but in a position to trade off some key benefits that companies need pay if a person on temporary assignment. Not sure about Mexico but when I was on temporary assignment and tax assistance included my taxable income was about 5 times my US salary.
That would give you a lot of negotiation leeway.

All sounds pretty good but a think you' all are way ahead of your interference.
I suspect that she has an undergrad BA/BS in Psychology, not a PhD and little if any clinical experience other than maybe as an intern.
I suspect that it would be very difficult to compete independently in the mental health field.
Even in Mexico there must be licensing associations that would prevent what you suggest.
I think that she needs think broader. Transitioning with a large company to get a sustainable basis upon which to look at options is certainly a viable choice.

She's probably hyperventilating as we type!