@Timothy ********
BUT if she IS going to go to the immigration office for an extension while she's here she'll need to get a new TM.6 ,
To do that she might need to get a police report stating it's lost before the immigration office will give her another one.
It's totally up to the immigration office on whether they make you do that or not
Good luck, as I said, if she's not getting an extension she'll be fine just showing up at the airport to fly out without it.