Did Isabel ever succeed her father to become the monarch?
Yes
No
She ruled as a regent for a brief period
She was named queen but never ruled
Answer
The answer is no. Isabel never succeeded her father, Ferdinand VII, to become the monarch of Spain. Instead, upon Ferdinand's death in 1833, the throne passed to his daughter, Isabel II, who reigned as the queen of Spain from 1833 to 1868.
The Regal Journey: Exploring Isabel, Princess Imperial of Brazil