Well she's getting you to rebuild HER home, so you might as well just give HER the money to pay the builders. Then you're out of the picture legally. Just monitor the costs.
I didn't use that option either in 2019 when I sent the money, and on my 2-3 previous visa applications they just accepted the bank letter that I have had the 800k in my account since X date. It's obvious from my record that I haven't used an agent and that the money is mine as I sent way more than that to buy a house, so I suspect they've found an obstacle and are just angling for a payment.
May not be conflicting but may well be out of date. Regulations change quicker than, particularly government, websites get updated. So it's wise to view the government website then come somewhere like this to confirm people's recent experience.