I survived (barely) the club soccer industrial complex with two kids, so I can sympathize. 
If I’m understanding correctly, your daughter’s sports schedule is (1) fall - HS volleyball (2) winter - free (3) spring - HS softball (4) summer - club volleyball?
Let her keep doing HS volleyball: she’s having fun, she’s staying fit, she’s socializing, she’s learning time management and teamwork skills – all great stuff, for her, and for college admissions. But YOU should feel to disengage from volleyball as much as possible: don’t go to the games if you don’t want to, cut back or eliminate volunteering. It’s HER thing, and clearly you are not enjoying it anymore, so it doesn’t need to be your thing too. (This was a hard lesson for me, because my kids’ sports had become like a hobby for me.)
I think parental input is more justified for club sports, because they cost money and often involve more travel than HS sports. Go ahead and encourage her to rethink her summer plans (and winter plans too, if she does in fact play volleyball over the winter). Maybe switch to club softball over the summer – or use the time to do something entirely different, like a job/internship/volunteering/pre-college program. Maybe use the winter months to explore school activities, or to do some indoor batting practice or pitching lessons. Get her thinking about other uses of her time, but I wouldn’t demand she quit club volleyball unless it was truly a financial and logistical hardship for you.
For softball, again, follow her lead. Let her do club softball over the summer if she wants to. Maybe she’ll love club softball, but still want to return to HS volleyball in the fall. That’s fine. Maybe she’ll get so fired up about club softball that she’ll want to quit HS volleyball senior year and do fall softball. That’s fine too. But the decision should come from her. Her recruitment chances are probably pretty slim, so I wouldn’t make that a big factor.