Daughter accepting zakaat to pay her father's hospital bill

Q: We have a patient that is seriously ill and unconscious. The patient was taken to a government hospital. However, proper treatment was not provided. The people of the community want to help the patient by getting him admitted to a a private hospital where he will be given proper treatment. The hospital bill will be paid with zakaah. However the patient is unconscious and the daughter has jewellery worth R36000, will it be permissible for the daughter to accept the Zakaat on behalf of her unconscious father?

Repeating salaah if one finds impurity on one's clothing

Q:

1. If one finds any impurity, like a small amount of stool on his clothes, would the clothes be considered napak and would the prayers offered with such clothes need to be repeated?

2. What amount of a najasat renders a cloth napak and impermissible to pray with?

3. If I need to repeat the prayer, would only the Fardh and witr be repeated or also the sunnat and nafl?