If my mom was named in a will but passed away before it was put into probate do I the only child of hers receive anything?

If your mother died after your great-grandmother, your mother's heirs (you) would generally be entitled to her share. Some wills have a provision that the person has to survive them by a certain number of days, such as 60, or they won't inherit. So if your mother died very shortly after her grandmother, she may or may not inherit, depending on the terms of the will. If your mother died before your great-grandmother, whether or not you're entitled to anything depends on what it says in the will. Many wills give gifts only to grandchildren who survive them.