The problem is that she's working in a very pop-dominated industry, and she clearly wants to be making music that isn't that. Record producers in the genre have picked up an unfortunate common practice of pitch-correcting all non-perfect notes rather than just the most egregious offenders, meaning the subtleties in a vocal performance that give it personality get lost in translation. Her produced music sounds fine in a technical sense, but they're not uniquely Gura like her raw karaoke performances, and I'd wage a guess that's what's putting her off about it.
The producers she's working with aren't exactly doing anything wrong since that kind of production is incredibly popular and the vast majority of music you hear on the radio these days is handled like that, but it means she's never going to sound like the '80s citypop artists she's into since pitch correction wasn't an option, let alone expected, when those records were made.