Likely not Maria Beatrix, the others can be taken in consideration but I will suggest a domestic match with one of the Orleans' girls, who are Henry's second cousins
The issue with the Orleans girls is age. Louise and Marie are 8 & 7 years older than Henri respectively and Clementine has already been chosen as a bride for the future King of Belgium.
The only reasonable scenario for an Orleans girl is either
- Have Francoise of Orleans survive and marry Henri (although she will be 4 years his senior)
- Have one of the four younger Orleans boys (Francois, Charles, Henri or Antoine) be born as girls and marry Henri V