Music is something that makes us alive. It's a part of who we are. You would never fuss or try to limit her yoga time or gym time (unless it's really unreasonable). Why should she try to limit your music time.
In my marriage (divorced now), my now ex would put up with the high paying gigs early on, but got really dark about me having gigs in general, and after I stopped doing those, she got dark about me playing or practicing at home. I truly did end up giving it all up for the sake of going all in to investing in the relationship. I didn't gig or play for about 3 or 4 years. What did that get me? She was still miserable no matter what I did, and not I was miserable too. I was a professional musician when she met me, and I gave it all up. In 2009 on my birthday I took that day off. I spent 4 hours at Sam Ash. It clicked. I had given up WHO I AM as a person. I decided I needed music and bass in my life. I decided to grow some nuts and speak my mind. To invest fully in the marriage. But I needed my outlet and I needed to be myself or I would be the empty shell I had become. Fast forward, that didn't go well, and here I am. I have since dated wonderful women, and I'm now engaged to the woman of my dreams. Balance is the key, but she understands bass is important to me, and it needs to stay so I am whole and able to give fully to the relationship. Communicate and follow the golden rule.