ILR is Indefinite Leave to Remain. Your wife would be applying this after her 5 year spouse visa (her current visa which is good for 2.5 years plus the extension for another 2.5 years
Thank you Raynaputi
Actually her visa has to be updated in in almost 3 years time from the time of her arrival here in the UK
God, we have a long way to go yet.
Regards
from us both