“their” and “she” are the pronouns because they are taking place of a noun (meaning a name).
extending for understanding: so for “she” it’s taking place of a woman’s name. the sentence could also be, for example, “sally told me the house had red shutters and a blue door.” “she” is holding the place of the name sally. and for “their” it’s holding the place of name of a group of people. this sentence could be, for example, “that’s not the smith’s house at the end of the street.” “their” is holding the place of the smith’s.
The Townshend Acts would use the revenue raised by the duties to pay the salaries of colonial governors and judges, ensuring the loyalty of America's governmental officials to the British Crown. However, these policies prompted colonists to take action by boycotting British goods.