Your mother's estate cannot be divided until the Will has gone through probate. Once it has, it becomes a public document and can be inspected at the probate office. As executor, your aunt is obliged to distribute your mother's estate according to the terms of her will - if she does nothing within a reasonable time after your grandmother's death, you can go to court to force her to comply with the Will. You are not entitled as of right to see a copy of the Will until it has gone through Probate but your Aunt is obliged to put it through within a reasonable time. You have no said how long it is since your grandmother died, but if it is more than say, six months and your aunt has not done anything about the will, you might think about contacting a lawyer to write to her and tell her to get moving.