Thanks for your reply..
If that's all it says then it means that she has leave to enter and remain at any point during that period. It does not mean that she must leave immediately and there is no 3 month exit date implied into such visas. So, notwithstanding that she will be slightly delayed in entering the UK she will be permitted entry.
Of course, if she enters the UK later than 3 months then it will mean that she will not have completed 2 years in the UK upon the expiry of the visa and therefore would not be able to apply for ILR straightaway, so she will have to apply for further leave to remain at the end of it by using UKBA form FLR(M) and then apply for ILR once she has completed the required amount of time she needs to reach the 2 year residence period.
You could try writing to the UKBA to attempt to push forward the period granted by the visa, but in all probability they will decline to do this, they are not very co-operative on these things and generally take the view that she should take responsibility for the length of leave granted as a result of the date she made the application. They will state that this is what FLR(M) applications are for and refer her to that.
Sorry it could not be better news.
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