"I am relieved that she is alive and simultaneously appalled by the news that someone so young has birthed and lost children", Tasnime Akunjee, a lawyer representing the Begums told Sky News.
However, government minister Ben Wallace told BBC Radio 4's Today program that he would not risk the lives of British officials "to go looking for terrorists or former terrorists in a failed state".
Speaking from a refugee camp in Syria, the 19-year-old teenage said she was nine months pregnant and wanted to return to the United Kingdom for her baby.
Meanwhile Anthony Loyd, The Times correspondent who found Ms Begum, said she was a "15-year-old schoolgirl who made a bad mistake... and we must do out best to rehabilitate her amongst our own people".
"Now all I want to do is come home to Britain", she said in an extraordinary interview with the Times of London.
Shamima Begum was just 15 years old when she and two school friends left their seemingly happy, comfortable lives and families in east London, took off to the war torn country and married ISIS soldiers. Each married an IS fighter.
She added: "I never thought it would happen. Now all I want to do is come home to Britain".
"But I was also frightened that the child I am about to give birth to would die like my other children if I stayed on".
"She has suffered trauma and I hope that she can come back and put this behind her".
The British government has said it won't help them out of northern Syria but if they manage to get to a place where there is a recognised government then they'll see what they can do.
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She bragged about having a "mostly normal life" in Raqqa, Syria, despite the "bombing and stuff".
Her her husband is in captivity.
Begum and two of her fellow Bethnal Green academy students, Kadiza Sultana and Amira Abase, made headlines when they flew from Gatwick to Turkey in February 2015, then entered Syria.
Scotland Yard, the headquarters for the UK's Metropolitan Police Service, was reported to have investigated whether Ms Begum engaged in activity that could make her a danger to the country, or that she could be charged with.
Begum spoke fondly of her time under ISIL, saying she lived a relatively normal life despite seeing "beheaded heads" in bins and being forced to observe ISIL's strict and literalist interpretation of Islam.
"It's important to remember she is 19 now, and she's had several years of intense exposure to the group's propaganda".
The family went to Baghuz and she left there two weeks ago along a three-mile long corridor east of the town.
Stating that she was not fazed by seeing a severed head in a bin for the first time, she said: "It was from a captured fighter seized on the battlefield, an enemy of Islam".
She said she remained scared her unborn baby would become ill in the refugee camp.
"I applied to marry an English-speaking fighter between 20 and 25 years old", she said.
With the Islamic State's territory dwindling to nothing, more and more members, including females, are surrendering to anti-ISIS forces.