The perverting the course of justice charge wouldnt be because he said he was somewhere he wasnt etc it is more likely to be he has said where she may be and wasnt i.e leading them places away from where she is, I think they know she is most likely in the river/sea now and if she is they will find her just a matter of time really.
Will they though... if she's in the sea??
This is what's upsetting me!