Hortense first appeared in Rosa's comic book serial "The Life and Times of Scrooge McDuck" and related works. There, she had a habit of being aggressive, although she was also a fiesty, passionate, outspoken and witty woman who was always there for her loved one and acted out if someone said or did something disrepectful.
Both Hortense and Quackmore were renowned for their fiery tempers, and started to fall in love after getting into a screaming match.
Hortense's age is unclear in DuckTales. Her brother Scrooge is nearly 150 years old, whereas her children Donald and Della are under 40. However, her parents are immortal, so it is possible that she's many decades younger than Scrooge.