Like others, I do feel torn about this. Unfortunately, I think heads have to rule hearts when it comes to this. The fact that this case has gained such publicity means that it is, whether we like it or not, a chance to set an example, and indirectly communicate to any other young people who are considering (for whatever reason) running off to join IS. I think it's probably in our interests to ensure that those people get the message loud and clear that this is a decision that cannot be reversed. I find it entirely plausible that taking a hard line in this case might prevent at least some other young girls from going over, or in other cases make it just that bit harder for young men to manipulate girls into going.
Is it really plausible to allow someone who is unrepentant for joining IS back into the UK in order to have her third baby? The other two died, by the way, and she clearly thinks the third would have a better chance of survival here. I find it profoundly sad that she still has 'no regrets' after losing two babies and seeing heads in bins, and I find it even more sad to think about the prospects her third child will have in life even if it survives. But it just sends completely the wrong message to allow this person back. I also notice that she has chosen to make her appeal through the press and in general has done so in as public a fashion as possible, presumably because she thinks it will help her case. She is even using her position of publicity to say that joining ISIS is 'like it is on the propaganda films' - an extremely dangerous thing to say. This just cannot be seen to be effective.
It's extremely sad, because this has profound implications for the survival of her baby, who could well die like the two before it. Alas, the responsibility for this lies squarely on this girl's shoulders.