I have no idea where the money comes from, but 100% it doesn't come from either of their jobs, there is no way they earn enough to fund that lifestyle. £600k house (that she's now going to spend a good £150-200k renovating), £30 a day just to heat the pool...
Maybe inheritance, dodgy dealings of whatever kind, lottery win, who knows.
I agree though that it 100% suits them to make out it's all funded by the travel scheme nonsense, as the only way you can make any money from that is by looking successful, to dupe others into signing up. It's the same nonsense that the JuicePlus huns have been doing for years, although for most of them it's smoke and mirrors, stuff on lease and paid by Klarna!
She clearly has got money, but it's definitely not from her business.