ILR FOR SPOUSE 5 years not completed

[Koms]

Hello experts

I need some help in order to apply my wife’s ILR.
I have grated ILR from Tier 2 general just last week. Below is the details for My Mrs.

My Mrs grated Tier 2 dependent Visa on 25/04/2013 to 26/01/2015. Than her Tier 2 Dependent visa get extended from 08/02/2015 to 09/02/2018.

My Mrs will complete five years in this country in 25/04/2018, but her current Tier 2 Dependent Visa will expire on 09/02/2018. Is there any sort of extension possible from February 2018 to May 2018, so she can complete five years and able to apply for ILR. If not than what other options are available.

[zimba]

Her 5 years lawful residence start from the date of entry to the UK. She need to extend her PBS dependant until eligible for ILR