Amber - I am just so sorry that Maggie is still missing I do not know what else to suggest. Did you try the things on PIF's site about lost kitties? That is really all I can think of How long has it been now?? So sorry! I know that another kitty will never replace her - but it *is* something you can be thinking about. Older cats are always in need of homes! Maybe some older cat will choose you!!! Maybe Mr. Orange?
Still, so sorry about Maggie and I know how sad you must feel and how you miss her!!! But...she can still show up!!!! Or, perhaps someone has her and is loving her very much - that is a hopeful thought.