Was she on maternity leave from a job in this other country? Or full-time carer for kids? Or both?for the years she took off on maternity leave, when living outside the country?
Is she paying UK voluntary NI contributions? If not she should be. See here: https://askaboutmoney.com/threads/u...or-uk-pension-on-top-of-irish-pension.230581/She was working in the UK