The Former Conservative MP had launched a campaign against 17-year-old Abby Tomlinson, who describes herself on Twitter as “leader of the #milifandom, a movement against the distorted media portrayal of Ed.”
Mensch’s hounding left the teen in tears and even saw former deputy PM John Prescott wade in to complain directly to The Sun, which employs her as a columnist.
She was variously described as a “bully”, “troll” and accused of harassing Tomlinson, who is currently revising for exams.
Prescott claims Mensch’s "appalling" behaviour is in breach of Clause 4 of the Independent Press Standards Organisation on harassment.
Mensch insisted she was not bullying Tomlinson, merely “criticising” her for allegedly hijacking the #Milifandom hashtag, refusing to credit the “true” founder and ignoring her “repeated” complaints.
Tomlinson has maintained she never claimed to be the first to use the hashtag, informing the columnist: “I said I turned it into a political movement. Now leave me alone.”
@LouiseMensch I also never said I was the first to use the hashtag. I said I turned it into a political movement. Now leave me alone.— Abby Tomlinson (@twcuddleston) May 19, 2015
But by Tuesday afternoon Mensch had performed something of a U-turn and stated she was deleting tweets “as I do not wish to be accused of 'harrassing’."
In a conversation with Twitter user Simon Chapman, Mensch continued to allege Tomlinson takes undue credit for the success of the hashtag but started censoring her own tweets in order “not to draw attention to the MF founder” (whom she has previously identified as Chloe) because she “is doing exams so must wait”.
Mensch added the blog she had been researching when she launched her tirade against Tomlinson (who, let’s remember is also sitting exams) would be temporarily shelved “given circs”.
@simonchapman and, FYI, I will delete that tweet before I go to bed and the uk awakes as I do not wish to be accused of 'harassing'...— Louise Mensch (@LouiseMensch) May 20, 2015
@simonchapman ...the MF founder in it— Louise Mensch (@LouiseMensch) May 20, 2015
@simonchapman ...who did nothing wrong. However, I am not going to write on it til later given circs.— Louise Mensch (@LouiseMensch) May 20, 2015
Mensch then asked Chapman – who described the incident as ‘youthful chatter’ – not to engage with Tomlinson on the matter as “she will accuse me of harassing her again”.
@simonchapman I wouldn't tweet that at TW; would prefer you deleted. She will accuse me of harassing her again— Louise Mensch (@LouiseMensch) May 20, 2015
@LouiseMensch I see this; it is youthful chatter. You are a fair minded person and I think nothing useful will come from focusing on this.— Simon Chapman (@simonchapman) May 20, 2015
For the record, Twitter user Chlo has apparently claimed to be the Chloe that Mensch was so tenaciously defending, and tweeted to Tomlinson: “I would like to stress that I have no quality w @twcuddleston she’s fab n any apparent ‘anger’ in my tweets was completely misinterpreted.”
i would like to stress that i have no quality w @twcuddleston she's fab n any apparent 'anger' in my tweets was completely misinterpreted— chlo (@s3ctumsempra) May 19, 2015
Mensch’s pursuit of Tomlinson began when the teenager revealed she was making a formal complaint against The Sun for its treatment of her family as it sought to interview her.
She also claims Tomlinson maliciously posted an image of a Sun reporter’s phone number, though the teenager said she had made a mistake and hastily deleted it.
Meanwhile, though Mensch has blocked Tomlinson, the teen who is sitting an exam on Wednesday has this message for her:
Dear Louise Mensch pic.twitter.com/jmsfNIP25f— Abby Tomlinson (@twcuddleston) May 19, 2015
A spokesman for The Sun told Huffington Post UK: "The Sun is neither responsible for, nor going to comment on, what our columnists write on social media."