No, agnostic is the belief in a supreme being, but we humans cannot properly comprehend it. So, we just live our lives and hope that the supreme being will come down to us one day.
Anyway, my mom is the exact same way as yours, Valen. She just wishes I believed in a god.
Agnositicism is a philosophical viewpoint. It's basically viewing that claims, such as the beginning of life or the existence of a God or gods, is either unknown or impossible to know.
For me, I believe that the majority of those claims can't be proven. However, if I were to lean more to one side, it would be Atheism.
EDIT: Added in the quote I was referring to.
There can be Agnostic Theists and Agnostic Atheists, so you can't say it's the belif in a supreme being when it is not.