I'd wait on the reverse until you determine which of the plants is LEAST LIKELY to herm, and that one should be considered for your mother. Also look at overall vigor. I don't believe Reverse prevents herming actually; it DOES prevent seed formation in plants exposed to pollen.

Remember that not all plants grown from feminized seed are prone to herming. You don't know HOW the breeder forced the herm, or how difficult that was. A chemically-hermed plant may not herm under photoperiod stress. Almost ANY plant will herm under heat extreme stress.