As long as your significant other's FFN was including in the booking, no IRROPS to her flight, I would contact the Platinum team on the next business day if the flight hasn't credited by then. I would suggest having the booking reference and flight E-ticket number to hand to quote. Hopefully she doesn't have another flight upcoming within the next week (or two). Meanwhile there's no harm in completing the online form for missing Tier Credits and Avios. Renewing her Platinum means that her Avios should receive an extra 50% she ought to double check her account that she received what she's entitled to do once this has been resolved.