Yes, absolutely.
However, escaping from prison is also a crime, with attendant prison time typically added to the existing sentence.
While the law requires that the convict return to prison to serve out her sentence, it may be the case that the statute of limitations has run out on her later offense of prison-breaking. I am uncertain on this point.
There is a statute of limitations for escape from prison, but I don’t know what it is. I’d bet it’s been exceeded.
Things to consider: This woman had 8 aliases. True, about half of them were variations on her own name. Nonetheless, she committed crimes when she got documentation under false names.
I’m not saying burn her at the stake, I personally think she should pay her extradition costs, make the restitution she no doubt owes, and be allowed to leave. I’m just enjoying the legal aspect of the case :)