given that this woman clearly has no shame, she may pop up again in the future, making claims etc - and even when you die, she might crawl out the woodwork...
so keep them. its only 4 lever arch files.
double bag them and store them somewhere to keep them dry - shed, loft , garage etc.
better than regretting it.
i wonder if you could potentially pay a solicitor to sort of collate all the papers and produce some sort of single file, with just the most important ones and produce a single document that totally presents the case, with all relevant and necessary legal information in, which is signed, dated and confirmed by them, should you ever need it for evidence..? if you get my meaning
(i dont know if this is possible or 'the done thing', by the way, its just a thought, but might be worth looking into)