it expanded the definition of citizenship to include women's right to vote

yes.the new constitution allows one to have dual citizenship

no

Citizenship does not affect your ability to get married, only where you can live.

Women were subject to the citizenship of their husbands. If their husband was a citizen or capable of gaining citizenship (hence free-whites) they had U.S citizenship. They did not however have rights. Due to the idea of coverture where women submitted fully to their husbands at marriage, women could not vote, own anything, sign contracts, etc.