How do I tell my mother that it's time for hospice?

My mother has CHF and we have been living and taking care of her for 8 months. The CHF clinic has recommended hospice, but mom thinks we are trying to "get rid of her." We had hospice for my dad and my mother-in-law, who lived with us until she passed, and I am aware of the good that hospice can do. How do I tell my mother that it's time for hospice?