It is perhaps worth repeating that one of the reasons that she is able to continue to appeal is that the government chose to change the law so that citizenship is removed at the discretion of The Home Secretary without any due process before it takes place. When this change was introduced one of the concerns expressed by Parliament was that it would be used to deprive people of their citizenship while they were abroad thus making it extremely difficult to challenge the decision. The Home Secretary at the time, one Theresa May assured Parliament that such a power would be used only rarely and that any decision to deprive citizenship would have the right of appeal through UK courts with legal aid if appropriate. In fact deprivation of citizenship of people while abroad has been used rather a lot. It's also worth pointing out that plenty of people have been deprived of citizenship and challenged the decision trough the various courts but these rarely attract any interest in the media.
It's always interesting to read comments that other people should be denied due process or have their rights curtailed.