Renewing vows

I have previously posted quite a bit on my 2nd-great-grandparents Vicente Campuzano and Maria Jesus Vasquez, including their Informacion Matrimonial document from 5 February 1890 and their marriage record on 2 May 1890. When Ancestry released a set of indexed Mexican civil records from Sonora, I stumbled onto a curious marriage record for Vicente and Maria Jesus dated 9 November 1906, two weeks before Maria Jesus died on 24 November 1906 in Pitiquito, Sonora. It looks like they renewed their vows. The ceremony occurred at the home of Ana Maria Orosco, grandmother of Maria Jesus.

My Spanish is poor, but it looks like Maria Jesus had a serious heart condition. They knew she was dying, and wanted to renew their vows before she passed. Her brother Miguel Vasquez was a witness.

The document also lists the then-living children of Vicente and Maria Jesus and their birth dates:
- Maria Jesus Campuzano
- Vicente Campuzano
- Plutarco Campuzano (my great-grandfather)
- Maria Concepcion Campuzano

I wonder about the reasoning for this ceremony, and why they went through this process before Maria Jesus passed.