As for the will stuff, I think Sandi is correct.
I think a will with an attorney is legally required to notify all of those included.
My daughter's grandmother (on her father's side)
is wealthy too. She had one son who died in my arms at 42.
I have heard that she has no intention
of leaving a penny to her two adult grandkids
(my daughter's father has another child too).
She is leaving everything she has, property and all,
to a nonprofit bird sanctuary. Just because folks have money, doesnt mean they always keep it the family.
I hope you wrote your aunt a card,
to thank her for her time,
and for bringing you things of your dad's.
You might ask her for a trinket,
or some momentos of your grandma's;
specific things, perhaps, if you had a fondness for them.
I would think any questions regarding a will
would be better addressed to a legal beagle in Mass,
rather than mamsource here in Florida.
Legal stuff is different from state to state, hon.
Lastly, if your deceased grandma was ill
prior to her death, consider that for a moment.
Health issues/health care/living assistance
often deplete monies insanely,
as well does any debts she owed at death,
and any final arrangements for her
(funeral/memorial/wake stuff, cremation/burial/markers).
Then the state hits the estate with a death tax too.
The greatest treasure your grandma left you,
no doubt, is the memory of any smiles you once shared.
The most valuable gift your father/aunt's generation
has given you is very likely: to stay level headed
in mourning and to honor the deceased's memory with love.
(fighting, leveraging, etc, after a death is common,
but in no way respectful of the dead)
May you find peace somewhere in your heart
along with those happy memories I mentioned.