Curcumin by itself is dangerous and can cause liver failure within a month. When taken in its natural spectrum (as part of turmeric) it's actually rejuvenating for the liver and used to heal some medical issues. If you're giving turmeric you can continue it for the rest of her life or stop giving it anytime you feel like it. If you're giving curcumin best to stop I reckon since it's only meant to be had in low dosage for the short term.
Best wishes.
Best wishes.