Choose your answer: Do "mistress" and "her" point to the same thing in the following sentence?

When my parents died, I was not earning enough to keep myself or my crippled sister Nelly , and without our kind mistress , we would have gone to the poorhouse. Nelly calls *her* her angel and she has good right to do so. her

Select from the following.
(I). no;
(II). yes;
(II).