Sara Trumble says Mills was a rude, angry and dishonest woman who forced her to lie to McCartney.
But Mills said Tuesday she treated 26-year-old Trumble like a daughter, showering her with gifts and foreign travel.
The hearing took place at an employment tribunal in the town of Ashford, in southern England, where Trumble is suing Mills for allegedly stripping her of her child-care duties after she gave birth to her own baby girl.
Trumble claims her relationship with Mills began to deteriorate after the 42-year-old "Dancing With The Stars" contestant split from the former Beatle.
