Hi Mick, so glad to hear that UK life is so good for you both.
It makes such a big difference to Monera that she has a job and has found friends.

Anyway regarding the FLR(M) she needs 30 months living in the UK .
Shortly before that 30 month anniversary she should submit her application.
Don't submit the application too early it's really important that she's able to complete the total 60 month residency for ILR.
Falling short by applying too early would involve an unnecessary extra FLR visa.