Comment by Prinzinc on ShadowX

@ShadowX I suppose it's possible that gene fusion with the right species can carry over longevity traits as well, however with gene fusion or even cybernetics you are still adding 1 + 1 and if you had a stronger original platform then it ought be even more powerful with the addition of other traits.  For example, grafting cyborg parts onto a human skeleton has limits due to the strength of the bones but if the bones are stronger you could theoretically attach stronger parts.  The same is likely true for gene fusion as well where the body and mind are likely to support a stronger foundational fusion the stronger the human body is.

There is also the possibility that the author will say that due to how high her fusion potential is, she doesn't lose her fertility.