Maybe you should spend the time you spent spying on other people’s personal bank accounts and posting bitterly about what they have on public websites more productively to try and find a way to earn more.
Or is this a (not very) stealth begging post and you’ were hoping people would DM you offering you money?
If this is real you are being incredibly unpleasant, you had no right to look, and nobody sees this kind of information accidentally, you didn’t look away as fast as you could, or you wouldn’t have seen the balances of four bank accounts. So at least be honest and admit that you deliberately kept looking until you’d seen what you wanted to see, although I expect this didn’t actually happen in the way you claim it did, given that most people open their banking app and go straight to the account they’re going to interact with and don’t spend long enough on the front screen for random members of the public to see enough of what they have to post about it on mumsnet.
You have no idea of this woman’s circumstances. I once had over £100k in my bank account, it was the proceeds from my divorce where my ex had bought me out of the house, and was waiting to be put into another house.
Maybe this is it for her.
Maybe she’s been saving for years.
Maybe she earns decent money.
Maybe she’s had a payout because of a car accident/medical negligence/<insert happening of choice>.
Or maybe it’s just none of your bloody business and you ought to put your time to more positive use.