Cheque deposit in her account. I just open a bank account today. I put cash into the account and ask her to draw them out.
At first I went to BOC but the staff said the account that do not requires min deposir has been cancelled. There is Chong Hing bank nearby and I opened one in Chong Hing at last. No min cash requirement. They charge about $50 per 6 months for inactive account. I say I use it for monthly salary and that is okay. However, they will charge you $50 per year for ATM card. My helper did not want to pay.
I think cheque payment is a iron proof of salary payment