Anj Handa, a friend of Afusat Saliu, who set up the petition on campaigning website Change.org, said:
We have been thwarted at every turn and the Government has failed on so many counts in this case.
The Home Office has failed to stick to its own guidelines on so many counts and have failed Afusat and her daughters miserably.
The Government had a chance to show leadership on the issue of FGM and again have failed miserably.
More top news
A picture of a mother and her two daughters posted on social media has left people wondering "who's the mum?".
A manhunt is underway after gunmen dressed in women's clothes and SWAT team uniforms attacked a boxing event in Dublin, leaving a man dead.
Thousands of junior doctors and their supporters, wearing surgical masks, will hold a demonstration over pay and conditions.