[HPforGrownups] Re: Harry, Hermione, Sirius, and the Dream, 2-way mirror

[jp velasco]

No: HPFGUIDX 117349


 Pippin:
> JKR has said the mirror wouldn't have been as useful as you 
> think...I'm afraid that if Sirius and James had them, Pettigrew had 
> one too, so that line of communication was probably covered.

Tim:
  I suspect that if Pettigrew had one then Remus certainly would. If Remus had one I would 
think Sirus would have mentioned it. If Pettigrew does have one,  then there is  the 
possiblity of him using it to spy, and  Sirius would not have given Harry the mirror at all I 
think.


Jp here
 
I don't think that Peter has a mirror... but Jo said (in her website) that the mirror will be useful in books 6 and 7. She did not elaborate but it struck me as odd when I was reading OotP when Harry forgot the mirror and had gone through all that trouble to talk to Sirius.