Take a vacation. If you don't take care of yourself, you won't be able to see after your family member. The nursing home is to provide for their care. You can help provide for your family members emotional needs by seeing them. The key is trust, which leads to the next point.
Human beings make mistakes and nursing homes employ human beings.
When mistakes occur report them immediately to the staff. Nursing homes want to have happy satisfied patients and families. Don't expect perfection. You will always be disappointed. Instead, expect your family member to have all their basic needs met in a timely and professional manner.