High Court papers obtained by The Mail on Sunday detail how Mrs Scottow is accused of a 'campaign of targeted harassment' against Miss Hayden, allegedly motivated by her 'status as a transgender woman'.
The papers claim that, as a 'toxic' debate raged online over plans to allow people to 'self-ID' as another gender, Mrs Scottow tweeted 'defamatory' messages about Miss Hayden.
She is also alleged to have used accounts in two names to 'harass, defame, and publish derogatory and defamatory tweets' about Miss Hayden, including referring to her as male, stating she was 'racist, xenophobic and a crook' and mocking her as a 'fake lawyer'.
Mrs Scottow denied harassing or defaming Miss Hayden and said she holds a 'genuine and reasonable belief' that a human 'cannot practically speaking change sex', but Deputy Judge Jason Coppel QC issued an interim injunction that bans her from posting any personal information about Miss Hayden on social media, 'referencing her as a man' or linking her to her 'former male identity'.