Good question, anon! I think she will continue to appear, but her big moment is over at this point. I’d like her to have some more brotp moments, too. It’s certainly a possibility, as she needs something to keep her occupied. Though, I have my doubts she’s going to tag along with team Natsu.
However, she will almost certainly have at least an upcoming major moment with Gray. Judging by what happened in the Tenroujima and GMG arcs, these Gruvia moments occur in two major parts.
Not including the moments of build up, in Tenroujima Juvia had her moment to shine in her Meredy fight, where she, Gray and Meredy were all linked (similarly to the Silver event in this current arc). That would be the first “act” of the Gruvia events in that arc. When that act was over, act two involved Gray swooping in and saving Juvia from Ultear. Then came the conclusion, where Gray worried about Juvia, followed by the comedic knockback of being put off by her request for punishment, and then a slight recovery as Gray carried Juvia to safety
In the GMG, again, we had the smaller moments of buildup that eventually lead to the first act, or even the first climax of Juvia and Gray performing a unison raid. That was a huge moment, but there was a 2nd act of Gray sacrificing himself to save Juvia. Then that again was followed by the comedic knockback of the rejection, and the slight recovery as Juvia made Gray smile, as he thanked her.
So, the first part of the Gruvia situation in this arc has just been dealt with. That would be the resolution of the Gray, Silver and Juvia situation. Gray and Juvia have both received major moments. They’ve both had their one on one fights. Gray, being a main character, and having just received a power up that’s relevant to the final boss, will likely go on from here to have another battle.
However, Juvia still needs to play some role, and she is currently distraught. She and Gray have also not yet reunited. So, I think something major will happen once they do. The last two secondary major acts have both involved Gray saving Juvia. This time, I think the 2nd act wont be as life-threatening or intensely dramatic, but more personally emotional. Which I’d prefer anyway. ^^