I'd have said GUARDIAN ANGEL if it was 8,5 but I can't think of a suitable angel that is 6,5 so I think Patron saint seems the best answer.
Wikipedia says " A patron saint is a saint who is regarded as the intercessor and advocate in heaven of a nation, place, craft, activity, class, clan, family, or person.[1] Patron saints, because they have already transcended to the metaphysical, are believed to be able to intercede effectively for the needs of their special charges.[