Thank you for the replies, the thing I'm concerned about is getting her a job offer it's kind of hard finding a job for her when she isn't here herself yet. Another thing, does her dominican education count for anything? thanks
Of course she needs to include where she graduated from on her CV. Depending on where she applies this could be a plus or a negative, but I believe there are many situations where this could be valuable information, because it indicates she is fluent in Spanish and with another culture.
She should look for jobs where what she learned in the DR is relevant.
There are many universities in the DR that are accredited in the US. I studied at a relatively small business college Instituto de Estudios Superiores (IES) that later became UNAPEC. My business degree there was good enough to get me into Columbia University, so Dominican education can be good. Like your girlfriend, I had lived here all my life, but my education here prepared me for Columbia. I know thousands of others who have studied here and then done masters in leading Ivy League, Canadian and European universities with no problem.
Whether her Dominican education will count, will depend on her. One cannot generalize about a Dominican education.