Can someone continue her education in Germany if the first university degree is not recognized?
If her high school degree is not recognized, then there is the possibility to apply to a Studienkolleg. They generally offer one- or two-year programs that teach German and enough other subjects to be accepted as an Abitur or Fachabitur. Then she can start a bachelor's program. Most universities have a quota for taking in students from foreign countries, this is generally 5 % of the places to study. But enrollments are down in Germany at the moment, so there are good chances of getting a position. Check the enrollment dates: usually July 15 for the winter term, January 15 for the summer term.