Qantas Check-in Bangkok

[Ash W]

Next week my old mum is flying QF2 BKK-SYD and I am flying a few hours later on QF1 to LHR. Does anyone know if it is possible for me to check-in for my flight at the same time as my mum, or will I have to let her go alone and return to the airport later in the evening for my flight?

If she does have to go it alone anyone know how I request some assistance for getting her to the gate? Is it as simple as asking at check-in or should I make a request before hand. (she is pushing 70 and not too good with airports)