Maama Mabira as Anywar is popularly known has been a subject of critical debate among opposition FDC supporters.
During The Democratic Alliance talks aimed at picking a joint candidate between Besigye and Mbabazi, Anywar took sides and supported the former Prime Minister.
She said Besigye had been given enough chances but failed all of them.
She even chose to nominated Amama for presidency at Namboole instead of escorting the FDC candidate.
Last week, FDC president, Mugisha Muntu, convened a meeting which dropped Anywar and replaced her with Denis Onekalit Amere as the official party flag bearer for the Municipality MP seat.
Anywar petitioned Muntu over the decision after threatening to sue the party but to no avail.
She resolved to get nominated for the Woman MP seat as an independent candidate.
After nomination, she promised to work with the FDC in parliament.
Speaking at a rally in Kitgum town which Anywar insisted on attending, Besigye called upon FDC supporters and members “not to blame Beatrice Anywar for supporting Amama Mbabazi”.
“We have long fought for democracy that empowers people to make political choices including supporting candidates of their choice,” Besigye told the rally.
Anywar campaigned tirelessly for Besigye during the 2011 elections which he lost to incumbent president Yoweri Museveni.
She has been one of the prominent members of the opposition and is remembered for fighting against the sale of Mabira forest in 2007.