Can a foreign national from the Phillipines, after establising residency in Texas, Petition the court for a foreign divorce?

My girlfriend who is 40yo is still legally married in The Philippines, they don't as of yet grant divorces. Her husband and her have been separated for 15 years. For whatever reason he won't grant her an annulment process. She plans to Travel Visa to the USA where if she is allowed to stay for 180 days in Laredo, Texas that should be able to satisfy the residency requirement. After she does a border run to Mexico and re-enters the USA is she allowed to file for a Foreign Divorce? Upon her divorce being granted, I shall marry her and she can obtain a green card. She plans on attending school or work and obtain her naturalized American citizenship and then she can ask The US Court to file and dismiss her marriage in The Philippines. It will take her 6 month to be granted a Travel Visa to the USA, etc. So we are just thinking ahead in the process.