Depends on her NI payment records.....
I sorted paperwork out for 3 widows here, 2 got nothing, one from 12 years back got a couple of thousand quid because she was under 45 years old..
Remember, now, male and females are dealt with by their own records which are dealt with at the age of retirement., women 65.
You can go online UK pensions, to fill in a questionnaire on it, or even phone them, l did that with one, they sent the forms, she got a letter back saying sorry.
She doesn't talk to me anymore.....????