Your mother is 10th, and her mother is 10th from the 10th or 7th house, who ruled by Merc.
The Merc is in your /1 house and so he is interested in your interest /chanting and really cares about you with Merc in the sign of chanting dignity. I don’t think she will not send them to you. It makes me look more as if he is not able to any reason, both his barrier and decline with his/merc. And the ruler of his household house is Mars, regressive or moving backwards. I wonder if he tried to send and either it was not found or, if by mail, it came back? something like that?
The Moon is definitely zero and then meets Saturn, suggests not to move much in the case for some time. For now, my suggestion may be that you talk to your grandmother and see if there are some obstacles she is getting from her, which is preventing her from sending documents? Maybe you can help with some of them?
