DA - applied by respondent

I have so many questions and thank those that have answered my previous postings. Just another question .........

She applied for Decree Nisi which was granted. To cut it short, it was him that wanted the divorce but she applied on the grounds of adultery. Time elapsed since the DN and he was told by her solicitor that he couldn't apply for the DA! Since then he realised that as respondent he could apply and has done so (out of time). The court hearing for this is in two weeks time. I understand that she will be asked two questions about why the divorce couldn't be finalised. I think that she might throw up the fact that finances haven't been sorted yet, but, as finance can be applied for years down the line, how would she have to prove that it would put her in extreme financial dificulties if the finances weren't sorted before the absolute?

I don't think I'm wording this properly, but I think what I'm trying to say is what can she do to prevent the absolute? Is it worth him considering a solicitor just to get this finalised?