I suggest you re-post this request on the general bulletin board, including all known information about your grandparents (assuming they are no longer living to protect privacy).
There are many volunteers like myself who enjoy digging into the past and helping others do research.
Do you know when and where your grandparents were married? You can send for a copy of their marriage certificate.
Do you have an exact birth date for your grandmother? There are ways to search for a birth record using that exact date.
If you add information, either on this bulletin board or the main one, I would be very happy to help you search (for free, of course).
You have a couple of women in your online family tree, but I don't know which one is your maternal grandmother.