It's maths day again!
920 patreons on minimum £3 tier = £2760/month or £33,120/year
920 patrons on maximum £8.50 tier = £7,820/month or £93,840/year
Patreon is 16.2% of her income this year
Therefore 1% = min £2,044.44 and max £5,792.59
Thus her annual income is somewhere between £204,500 and £579,250 after taking two months off with pregnancy and three months off with maternity leave and much as I like Hannah... damn, I'm in the wrong job. If she'd worked the full twelve months, that could have been £350k/£990k.
(But I did duck up the maths first time and give her an estimated max of £1.3m - it's not quite as bad as that!)