I've lost the passion for art, and I am suppose to be an artist. I no longer care.?

You're grieving from all the above and that's what is keeping you from doing what you love to do. You don't just stop being an artist, you already proved that you are, and it's so normal to go through a rough patch or a dry spell. You don't care right now because everything else needs your time and devotion at the moment. That doesn't mean you'll never ever go back to sculpting. You need just to work on yourself. Breathe. You're recovering from a devastating blow, it would be absolutely normal to drop everything else to deal with it. Then one day you'll find yourself longing to do it again or musing over an idea, and hey - you're back at it. Just be patient with yourself and keep yourself in habit by doing a sketch journal.