OK. I'll come back when we hear more. Thanks for the help.
Yes -
@pedr in post #7 sets out the issue here very clearly
Your wife will not have been helped by people referring to delay - repay compensations as 'refunds' and I have often heard this word used by train staff on train announcements when the train is delayed which hardly helps, so confusion is not unusual.
I think you did the right thing to ask them for clarification and to see what they say - but if your wife has been obtaining 100% refunds for tickets that were used for travel, albeit on delayed trains
I would be suggesting the best course of action is to swiftly apologise for misunderstanding the process and offering to repay the sums repaid to her in the past to prevent the matter escalating.
Going forwards have a careful read of this LNER page on Delay Repay - but you claim for the delay on the train your were travelling on
from the train operator of that delayed train (not from where you bought the ticket from)
If you're delayed on an LNER train for 30 minutes or more you're entitled to compensation. Choose to claim your compensation or donate it to CALM.
www.lner.co.uk
So looking at the stations mentioned in the messages sent to you, some of the days might be on LNER trains but probably some on trains operated by others (eg Thameslink / Great Northern etc - and this is worth noting as whilst LNER only pay delay -repay after 30 minutes delay, Thameslink make a payment after 15 minutes delay) which would mean that you would be seeking delay repay compensation from a variety of train operators. A heavily delayed trains can result in a delay repay compensation payment of 100% of the cost of the ticket, but note that is still not a 'refund' even though it might seem like one - at least as I understand it.
My view is that you should certainly make legitimate claims for occasions when your chosen train is delayed, but only claim refunds if the delay means you choose not to travel as a result of the delay (there may be other occasions when you wish to claim a refund but I'm not getting in to that here)
When you hear back do post any questions about this process or advice that you need.