The thing about asking to have the visa re-validated. It needs to be in the same 90 day window of the first visa. So if she goes home and then contacts the consulate/embassy there needs to be enough time to get the passport sent back to them, get it re-issued, have her enter back in the US and get married all in the left over original 90 days.
It would make much more sense to get married tomorrow and get the forms sent off ASAP. Once you get the receipt she can try for emergency AP.