I do have a theory about Lingxi, which kind of counters any possibility of her interfering in YC current recovery… I think her plotline will trigger way in the future, maybe she will become the big boss Mars mentions, considering he also hinted that this person apeared early in the story. Also, EG wife (HSDE) is behind the crack and still lives, I don’t think she will be the big boss, maybe will bring only some conflict, but all will come to a stop because she will recognize his EG veins and her daughter within YC (who will also be in Devil mode).
Lingxi was stuck by black lightning before she was born, which is said to be the strongest / purest type… And this happened on the blue pole star, which has the most turbid energy, meaning it is some high class inheritance, creation god / devil lvl.
It’s also worth to mention that the fragment of the WDHM was the thing that awakened this inheritance on her after it reacted with her, something that did not happen even with the golden crow (true god fragment) or BB (high lvl god inheritance). It also did not react with YC, who also have creation god inheritance, but he only have the veins ans some seeds at the moment, no complete legacy… She was also able to read it easy.
All of this said, I think she will become Mo E after she integrates with her other self… It would be the perfect big boss, the guy who is so righterous that will go against HSDE and devil YC. This would also bring some drama, as she is his childhood love…
Also worth to mention that in order to win, YC will probably learn the WDHM, as he is the only one able to do so, and become the ancestral god. In the piece Lingxi read, mention dark and light being together, only YC have it, and on the piece BB translated, mentions NPEB, which YC will obtain after he finally consumate his wedding with XQ.