I think the problem is that Precia is a disturbingly broken character at that point... I mean ignoring the 5 minute rule for soul retrieval issue (which can be bypassed with Alicia being in statis when not quite dead yet), she can clone entire humans of great magical power and upload memories into their skulls. Meaning she can make a Philospher's Stone out of clones and only kill a single person who is still around afterwards.
Though I could see her making her daughter into a homculus and said homculous not being bothered by the lack of emotions as not having them is basically all that is making her homelife sane.
The other route is that Precia makes a Fate/Alicia Chimera and calls it a day. Fusing a creature with itself has got to be the easiest bit of human transmutation every. She can even practice several times a head of time... or fuse her with a blank clone.
All in all, if she hasn't gone off the deep end yet Precia is going to be morally ambiguous but better the rest of the local evils.
Though I could see her making her daughter into a homculus and said homculous not being bothered by the lack of emotions as not having them is basically all that is making her homelife sane.
The other route is that Precia makes a Fate/Alicia Chimera and calls it a day. Fusing a creature with itself has got to be the easiest bit of human transmutation every. She can even practice several times a head of time... or fuse her with a blank clone.
All in all, if she hasn't gone off the deep end yet Precia is going to be morally ambiguous but better the rest of the local evils.