Before I got married, I used to let my parent and sisters know how much I made (eg. 7200/month with 2 extra months for bonus etc)- so that we could arrange how to pay off the mortgage.
after I got married and moved out, I just told them 萬幾啦.. until my husband lost his job, my mom got worry, and kept asking if I have enough money to spend - as I used to give her pocket money each month..
I did not told her the exact $$ but just tell her I would be able to give the same $$ as before due to I am the sole income earner.
Guess they are just worry about you le, nothing to be special lor. Every parent are just like that.