I have... concerns...
Cassie came from the desert as a slave. This we have been told by both the Don and Cassie herself. If her parents were also living in this same desert town, they are most likely dead.
And if they're not...
If they are still alive and in the desert town, that heavily implies they did nothing as their daughter was turned into a slave. Or worse, were the reason she became a slave in the first place.
That's the kind of parents you should only want to meet if you intend to kick their asses, not ask for their blessing to court their children.