I had this and it's a nasty solicitors trick.
What I did was take their bundle and used a pdf editor software and added my documents to the bundle. Remember to add the document in the correct subheading and on the contents page and also continue the cross referencing letter and number at the bottom of the page, eg C27.
I used Adobe but I read on here somewhere that there's another that is free, lovepdf??
Then, I sent it to the court and copied her solicitor in stating that they refused to add documents that were agreed and therefore this is the court bundle. As the applicant you are responsible for the bundle anyway but usually if other side is represented they do it to be fair.
Solicitors are never to be trusted, they are horrendous.