Still looking for an answer to this.
Since the reasoning for 33 is that it's the peak age, I would assume Eve was created at the peak age for women. I don't know what that was for the hebrews.
I do find the idea that she was at the very least a decade younger compelling, it would make a nice microcosm of God and Adam: Adam watching over Eve till she grows and learns enough, Eve rebelling against Adam, etc.
On a somewhat related note, I also find this compelling: symbolically very powerful and resonates with the True Adam (Christ) and the True Eve (Humanity).
"Certain Rabbis interpret that Eve dedit de ligno to say that Adam refused, but Eve “took of the tree,”—that is, broke a branch and “gave it him,” with the stick until he accepted and ate."