Incorrect - you should have realised that the "staking" was only done very recently and her account was years old (it took me all of 1 minute to work that out).
You still proceeded with buying the account despite the fact that you should have known that it was very likely that it had been hacked.
You have no moral ground on which to walk upon as I have shown.
Just give up and give her back her account would be the right thing to do (for sure you can call out the asshole that sold you the account to make sure that they can't do that under the same name again).
You lost some BTC but the reason you lost it is because you didn't want to just create a new account and wait like everyone else (so you actually deserve to have lost some BTC for doing so).
Look i saw all adress connected to the account but just one of them were staked as being the adress in use,even without any transaction,meaning this user didnt wanna to expose the volume she handled i had research the account and i hired a escrow to make this clean,as i said i can refund the account as long her or someone refund me the 0,075btc i had paid for it ,i made the transaction legit as the forum rules,im victim here as her .Even when i dont get till the moment why this acusation just started after the payment been sent to the seller.And sure i will red tag the seller making that account invalid to any deal.