7 days is not quite long enough time to wait. Give her another 7-10 days.
Why not give them a frame of eggs at two weeks, instead of waiting till week three? If I come back the next day and see drawn out queen cups, wouldn't I know that the previous virgin was a failure? And wouldn't that shorten the turnaround time to get a new queen cell?I like to wait 2 weeks from emergence. Super important to leave them alone during this time. At two weeks check for eggs. No eggs then give them another week. If I don’t see a few eggs by week 3, then I donate a frame of eggs from a strong hive to see if they want to start making queen cells again. Bad weather can lengthen the mating process.
Ryan