juanita schmidt sides petry

does anyone out there know if juanita schmidt sidesmeineke is the daughter of marie petry who emigrated to the u s, texas specifically, back in the 1930's
her last known place of residence is san antonio
have a address but no phone number
i am searching for this info for a friend, paul b kime, who is searching for info about his birth mother, marie petry
anything is helpful...thanx