No, she does not need a transit visa for the stopover in London Heathrow.
In case she has to transfer between terminals then she must take the airport bus (for transfers) to the departure terminal as soon as possible.... I once missed an onward flight because the 2.5 hours connecting time was not sufficient for the transfer and security checks despite jumping the queue
Cheers
In case she has to transfer between terminals then she must take the airport bus (for transfers) to the departure terminal as soon as possible.... I once missed an onward flight because the 2.5 hours connecting time was not sufficient for the transfer and security checks despite jumping the queue
Cheers