Nunez and Calderon Photos, 1880s and 1890s

I think this is an image of my cousin Jose de La Luz Nunez and his wife or sister. I'm not sure. I'm also having trouble making out the note which reads (sort of):

"To commemorate sincere friendship [unclear phrase] Dona Paula (?) V[which is probably for Valdez] de Calderon and family on the 21st birthday. Chihuahua, February (?)  11, 1883, Jose de la Luz Nunez.

From what I can make out, this photo is of my great-grandmother Julia Calderon de Nunez. The back has a note, paraphrased in English: "to my sister Calixta Calderon de Herrera, Chihuahua, April 7, 1882, Julia Calderon."

My grandmother's sister Ester Nunez, probably from after 1910: 

A portrait of three woman found in the Nunez-Calderon collection, but unlabeled.