In February 2017 Future Inns, a hotel in Cardiff Bay accused Brown of smoking "recreational drugs" in her hotel room. The hotel stated the room could not be used for 24 hours and issued a £250 bill to Brown for the cleaning cost. In July 2017, a recording of a telephone conversation emerged, in which Brown was heard describing the Labour MP for Streatham, Chuka Umunna, as a "fucking coconut". The call, made in May 2016 to her then senior adviser Nigel Williams, whom she sacked later that month, was recorded. Brown said her language was "inappropriate" and apologised, although also stating that she "was using language that friends and colleagues often do when chatting to each other". However, Brown stated that she stood by her comments that Umunna had "as much understanding of an ordinary black man’s experience as I have". Brown was also recorded referring to Tristram Hunt, who was then Labour MP for Stoke-on-Trent Central as a twat. Brown's comments were referred to the assembly's standards commissioner and Labour, Conservative, and Plaid Cymru members called for Brown to be sanctioned. Brown was suspended for a week without pay after an investigation by the assembly's standards committee, a decision which was criticised by Neil Hamilton, leader of the UKIP group in the assembly. It was revealed in July 2017 that the UKIP branch in Delyn had called for her de-selection, accusing her of "abrasive and discourteous" behaviour towards local members.
UKIP
In May 2016, she voted for Neil Hamilton as leader of the UKIP group in the Welsh Assembly and against Nathan Gill. In March 2018 she was chosen by the UKIP Assembly group over Hamilton's choice of Gareth Bennett to be their representative on the party National Executive Committee and in May 2018 she backed Caroline Jones to replace Hamilton. Brown expressed regret at Jones leaving the group after Bennett won a ballot of party members intended to settle the group's leadership.
Independent
In March 2019 Brown resigned from UKIP to become an independent AM, accusing the UKIP group of sexism. According to Wales Online, Brown was told she would not be welcome in the Brexit Party when it formed a Welsh Assembly group in May 2019, an accusation Brown has called "fake news".
