Whose Carte Vitale to use for a dependent?

For the last few years I have had an annual S1 as a cross border worker with a Carte Vitale of my own, with Covid last year this was not possible so this year no new annual S1. On the upside my good lady wife is a little older and DWP were “happy” to add me as a dependent on her pensioner S1. My Amelie account has now been closed and my rights added to her Amelie account, mild panic when they cancelled my account but got past that. Question is, when I next need healthcare, which will be booster jab next month, do I give them my Catre Vitale with my social security number and rely on Amelie to link it or do I need to take her Carte Vitale and use her social security number?