Settlement visa wife commonwealth

[Laijntia]

My wife visa was approved and she was supposed to come to the UK between 08 August and 08 September but she could not make it because she's pregnant n the airline Wouldn't allowed her to travel coz of her condition. She just given birth n she won't be travelling till shes fit to travel. Her visa is expired since she supposed to pick it up between 30 days . It's the 12th September now and her visa is already expired is she still can apply for a vignette transfer visa to extend her visa sinces it's already expired I need help pliz

[CR001]

She can apply for a new 30 day visa vignette, costs £168.

[Laijntia]

So can I apply for more than 30 days coz she will be fit to travel than ? And how does it work to apply for it do I have to send more evidences or document when I apply ? Thank you.