Hi Olga,
You have 3 sisters, right? Your mother's name was Olga (maybe Arredondo?). I do not personally have a picture of your grandmother, but I will contact Raquel "Rachel" Valenzuela who is Ynez Valenzuela's daughter. Ynez was Maria's brother. She may know more or perhaps have a picture. Did your grandmother go by the name "Maria" or did she have a nick name? I have a million questions for you, as you may have for me. I can help you you though. I'll let you know what Rachel says. My husband is Javier, who is the son of Angel, who is the son of Angel.
Laura