I think physiotherapists would come up with some training and suggestions, they are very good at that kind of thing. They showed my wife some great techniques for getting up after she suffered a stroke and made it look so easy. The six weeks is actually a rule of thumb and not a rigid recovery time for every individual. Some can take a week less, some can take weeks longer. Physiotherapists will be able to show you some ways to assist getting your Mother up, but you need to follow the training carefully because the last thing you need is a sore back. What about borrowing a hoist from the hospital for a few weeks? Here in the UK there are charities which lend equipment for a small donation.