It's hard to feel we might not be living up to our parent's expectations or hopes. But it's important to remember that in most cases they're just worried about us. They want us to have the best and without meaning to, they can put a lot of pressure on us.

There's not much to do about this save to tell her that you feel this pressure or try to shrug it off. That or maybe try, "he sounds like a wonderful son, you must be so proud." My parents always took hints like that. Although, this last option isn't recommended if your parents are reactionary, harsh, lack a sense of humor, or just generally don't take insubordination well.

Cyran0