She was lucky: if she'd been a Pakistani in England and had said something unkind about Mohammed, the Pakistan government would be demanding Twitter (or Facebook) reveal her identity so that they could extradite her, possibly to meet a far worse fate than a huge bill.
http://www.telegraph.co.uk/technology/2017/03/17/pakistan-wants-facebook-twitter-help-identify-users-suspected/Pakistan wants Facebook, Twitter to help it identify users suspected of blasphemy
Pakistan said on Thursday it had asked Facebook and Twitter to help it identify Pakistanis suspected of blasphemy so that it can prosecute them or pursue their extradition.
Under Pakistan's strict blasphemy laws, anyone found to have insulted Islam or the Prophet Muhammad can be sentenced to death.
Interior Minister Chaudhry Nisar Ali Khan said an official in Pakistan's Washington embassy had approached the two social media companies in an effort to identify Pakistanis, either within the country or abroad, who recently shared material deemed offensive to Islam.
He said Pakistani authorities had identified 11 people for questioning over alleged blasphemy and would seek the extradition of anyone living abroad.
Such, it would seem, is Pakistan's response to international criticism of its blasphemy laws: extend them outside its territory.