oh it could Arthur if your good wife didn't come to the uk within 28days of the visa being issued she might have had to apply for FLR in the uk, but as a spouse visa is valid for 27 months now not 24 months, most will not have to apply for FLR, as she could have taken nearly 4 months after her visa was issued to come to the uk.
also if your good wife could not pass her life in the uk test and her spouse visa was about to expire, she could apply for FLR instead of ILR