Thank you for you ongoing concern. Unfortunately, even if flights do resume today, it doesn't mean a normal schedule can operate, especially with long haul flights, plus apparently the ash cloud is back this morning.
I might be able to book another flight, but things are not looking good.
I have just been on the phone with Qantas and our flight is still definitely cancelled, next available seat is on the 29th of April. As I have to be back in the UK on the 11th of May, there isn't really much point in going. So we think that we might go back over Christmas, if we can afford it.
Now I just have to think of some special things I can do for my sister.