I am trying to do everything by the book to the last penny for the 5 year look back period. Am I correct in this?

My mother is spending down $5,000 in assets to assisted living facility. If she needs to go to a nursing home in the next year or two, I am hoping this is satisfactory in terms of the 5 year look back period. I am trying to do everything by the book to the last penny. Am I correct in this? Feedback greatly appreciated.