Questions 1,2,3.4. all relate to expenses paid by someone (who) for the care of mother. If these expenses have been paid by the person applying for the subvention then the money is no longer available for assessment.
The financial assessment is based on the persons income, savings and investments and property, taking into account the spouse's right to income and home.
Question 5. Yes any gifts within the previous 5 years will be treated as if they did not happen
Question 6. Perhaps a family member could be POA
As this is a lengthy process I think it would be a good idea to do it ASAP. New rules have been introduced since October 1st where payment will not be made until the application has been processed. Prior to this payment was backdated to the date of application