Part of the conversation between Yoda and Qui-Gon Jinn when the latter explained the ability to become one with the Force yet retain consciousness (henceforth called the Force ghost ability) goes as follows:
Yoda: "Eternal life…"
Qui-Gon: "The ultimate goal of the Sith, yet they can never achieve it; it comes only through the release of self, not the exaltation of self. It comes through compassion, not greed. Love is the answer to the darkness."
It has also been revealed that Anakin Skywalker was able to redeem himself and attain this ability when he finally defeated the darkness within him and willingly sacrificed himself to save his son out of pure selfless love.
The Daughter is an enigmatic and extremely powerful Force-sensitive, an embodiment of the light side and believed by some to be of godlike status or nearly so. This suggests that she is most probably capable of becoming a Force ghost - which can be considered to be the pinnacle of the light side - as well. After all, she has also sacrificed herself for love, in her case to save the Father from the Son.
Theoretically, it seems all the conditions are met as far as I can see: she did the same thing as Anakin did to qualify to learn the ability, and her proficiency in the light side is undeniably far beyond Yoda or Obi-Wan's. Did she actually go on to become a "Force ghost" though? There are speculations that she is
the Convor in Star Wars Rebels
but nothing is confirmed. Are there any other sources not mentioned that can help to answer this question or identify the likeliest outcome?