Lawn Mower

On our way back from the quarry Mercedes and I spotted an elderly lady struggling to mow the grass on an extremely steep hill in her front yard. We stopped and I offered to knock the rest out quick (it sucked even for me). She told me her husband used to do it but he died three months ago . Ofcourse she offered to pay me and was extremely grateful that I had stopped. We exchanged contact info and she was very adamant that she would pay me if I could just mow the hill for her. Long story short I'd like to buy her a self propelled lawn mower so she can do the rest of her yard without killing herself over it. I will still happily mow the front and plan on getting her a new lawn mower regardless if the goal is met or not.