Travel outside UK visa expiring soon

[shb]

Hi,

My wife is on the UK spouse visa which runs out on 30/01/2018 and would need extension. She is a Pakistani national and needs to travel to Pakistan in November this year. I was wondering if she will be allowed to travel while the validity of the visa will be less than 3 months? If she is allowed, what is the maximum date she needs to come back in UK by?

Thanks
Salman

[CR001]

She can travel but must re-enter the UK before her visa expires.

[shb]

Thanks much