Mary II would have inherited the throne via inheritance, but for the birth of her half-brother, James. As it was, the fateful event sparked the Glorious Revolution: you're quite right that Parliamentary action did indeed make her into queen regnant.
Just underscores the fact that Parliament was (and is) supreme in the country. Matters were entirely different in Russia, where in the 18th century females acquired the throne via the fiat of the emperor (Peter the Great) or conquest. But the country was an autocracy, and the succession rules were not codified in stone: possession was basically nine-tenths of the law. 
Previous Message
Could that be said of the last reigning Stuarts- Mary II and her sister Anne? They reigned by order of Parliament rather than by general inheritance.
Message Thread | This response ↓
« Back to index