At the worst, Geno gets one year of playing time from Evina. After what he experienced with Azura, Geno will be prepared for whatever Evina decides.
If Evina gets immediate eligibility, she allows Geno to not rush Anna or Aubrey into extensive early playing time. I personally think both are ready but as we all know, Geno has a thing about playing freshmen. Squeaks played a bunch out of necessity. Even she struggled at times.
Again at the worst, Evina is a transitional player that can be used until Paige and Nika arrive on campus.
I just don't see any negatives. If she accepts the coaching as most assume, it is a huge win for all involved.