In The Telegraph article, they say that the VAT change means that her school fees would have increased £1,090 per team, but then they also go on to say that her mothers leaving her job has resulted in £2,000 monthly in lost earnings. A lot of things don't add up here.
What doesn’t add up? The increase was £1090 per term (presumably just until the summer, after that fees would go up even more) but the lost earning would have needed to cover the whole fees not just the increase. The £1090 increase would mean equivalent annual fees of around £25k vs a £24 income.