That’s what she did mate . She is now test ready but has to pay another £500 pound just to keep driving and not get rusty. She is gonna contact them in the morning .Download an app like driving test genie, you give them your test date number etc and for about 16 quid they scour all the cancellations on the DVLA every day and will text you an alert when one pops up to reschedule. You'll get one in no time that way.