Despite being released earlier this year, it is understood that Ibrahim's family appealed the decision to overturn her convictions.
She was orginally convicted for apostasy and adultery and placed in prison, where she gave birth to her daughter Maya.
Since her release she has travelled to the USA, where she is set to stay with her husband, who is a US citizen.
Ibrahim's lawyers have received threats since taking on the case and have been issued with travel bans by Sudan's legal regulatory board, the Lawyers Admissions Committee.
CSW's chief executive, Mervyn Thomas, criticised their treatment.
He said: "The unwarranted issuing of travel bans against Mr Mustafa and his colleagues by Sudan's regulatory legal body highlights the lack of independence of the legal system.
"The freedom of lawyers to defend their clients without facing harassment and intimidation is of paramount importance in ensuring the protection and promotion of human rights.
"We call upon the international community to hold the Sudanese authorities to account for the safety of these human rights defenders.
"We also urge support at the Human Rights Council for the renewal and strengthening of the mandate of the UN Independent Expert on Sudan responsible for monitoring human rights violations in the country."