Ina got royally fucked by Cover, but going by how bocchi Ina is, I doubt she is all that mad if she has a good reason to skip over all the mandatory Cover homework she had to do in JP.
From my understanding of what HoloJP is saying (Pekora saying that if you want to stream do NOT join holo, and Laplus saying she thought studio work is at most once or twice a month and NOT practically every time), there is a LOT of behind the scenes work with Cover. At least on the EN side, the people who graduated are people who aren't top idol power tier AND they want to stream more. Considering Ina is the former but not the latter (Nagu pretty sure streamed about as often as Namie does now), I'm sure she is on the same deal Gura is in. That is, minimal streaming, some homework here and there, in exchange for them not officially graduating so both Cover and the girls can keep on profiting off the Gura/Ina IP. Pretty sure the takodachi IP alone is enough for Cover to give in to her whatever she demands for the bare minimum in return
So yeah IMHO, in the event Ina feels the itch to stream more and do Cover homework less, then she will graduate. But I highly doubt that happen, as her bocchi nature means that if she can do her priestess duties while doing Holo as a side job to rake in the royalties from merch/channel revenue, she will have less motivation to do lots of streaming activities as an indie.