[savedbygrace]

If I had to correct it (and I don't think it needs to be corrected) I would correct it this way:

"The genius of Toni Morrison enables her to create novels that arise from and express the injustices African-Americans have endured."

I don't think it needs to be corrected because "Morrison's" is possessive of "genius".

What if it were re-worded like this:

"Her genius enables Toni Morrison to create . . . ."

[liberalnot]

i did the same as i read it.