Why is the word terrorist in quotes? That's exactly what she was. That word isn't just reserved for men who wear turbans.
So in cases like this were the militant struggle involved fighting for what we now consider a fundamental right rather than purely barbaric violence, people want to make a distinction from terrorism.
For example the IRA bombs in London where often targeted at economic targets ie look we can cost you so deal with us - ok they also had a go at the PM and almost succeeded a couple of times.
With ISIS its almost a return to the original roots though there is also an element of sectarian almost genocidal which is why targeting medics and children is ok for them.
We have this notion that everything can be solved with a cup of tea and a polite, perhaps friendly conversation.
It is this precise notion that makes war and terror likely - because we think ourselves better than those who came before, and that we are immune to those forces that dragged them into terrorism and political violence.