Some times, mutations take hold in small ways and your plant can push through it with the odd may leaf or 2. Your plant has other leafs to pull energy through to finish off your plant or in your case start it. With both "cotys" not been able to draw in any energy as they are mutated and lack what's needed to push your plant through the seedling stage she's sadly a goner. Roots are roots they'll take hold but no energy, no push.
Chop her and move on pal.