Don't concern yourself unduly with those matters at present, your task right now is to get your girl into UK, once she is here, you can then attend to things like obtaining a replacement passport if hers is to run out.
You can always have the visa trasferred, for £150.00 or something like that, I know what youre thinking, more money "! I only have 1 word for you.
Mabuhay !"
