Ms Begum left four years ago aged 15.
Her parents, originally from Bangladesh, in a statement on Friday said the teenager's unborn baby was "total innocent" who had the right to grow up in the "peace and security" of the United Kingdom, the BBC reported on Saturday. That's a matter of global law.
"I never did anything". I married my husband.
She continued: "I had my kids, I did have a good time there".
"It be correct that then things acquired more noteworthy and I could possibly now not take care of it anymore".
The family said they were concerned that Begum's mental health had been affected by her four years in Syria, during which she married an IS fighter and had two children who died.
Speaking from Al Hol camp, in north-eastern Syria, a heavily pregnant Begum told The Times that she had fled from the fighting in Baghuz, where the extremist group was battling to retain its last foothold in the region.
Kadiza is thought to have died when a house was blown up, and the fate of Almira is unknown.
Mr Rafiq said she would not be obliged to participate in the voluntary de-radicalisation programmes to be released from jail and reunited with her child if she were to be imprisoned for terror offences.
"When it was put to her that people in Britain may have concerns about the views she may still have about Islamic State, she said: "That's something they have to question me about before they take my child away, I guess". Like it attracted a lot of people".
She has however said she would like to return home to Britain - and her family have said she is in "danger". She told Sky News on Sunday that she lived as a housewife since 15 while she was married to a Dutch ISIS fighter and insisted she "never did anything unsafe".
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"I feel like she doesn't understand there are other ways of thinking and a form of justice - she's so young that she hasn't done the research, the psychology of human beings and why people do the things they do".
Home Secretary Sajid Javid said a number of IS supporters have returned to their native countries, but says he is prioritising the UK's security above all else.
The lawyer insisted that the baby was "no threat" and that legally Ms Begum was allowed to return as a British citizen.
The former attorney general said: "In the end she will have to answer for her actions".
Noting it was "a matter of worldwide law and domestic law", he said: "It doesn't mean either that we can't seek to hold them to account for their behaviour thus far".
The demand came as he prepared - ahead of the pullout of U.S. troops - to declare the group's so-called "caliphate" destroyed, with US-led Arab and Kurdish forces close to capturing its last Syrian territorial holdout.
"The Caliphate is ready to fall", he said in a Tweet.
"Time for others to step up and do the job that they are so capable of doing".
She said: "I can only hope that we can rehabilitate her and teach her about secular humanism and Western principles, because I don't believe she was taught that to begin with".
Nonetheless he cautioned it changed into mistaken to suppose IS changed into "100% defeated".
"The ideology, the thinking, the support behind it, that is going to continue", he said.