What Blanche SHOULD have done
I don't understand why Blanche and George were running around all over the place trying to find Eddie Shoebridge so they could make ten thousand dollars. If I was a con artist like Blanche (which I'm not), why bother going to all the trouble looking for the real Eddie Shoebridge when you could pass your boyfriend George off as him (he's an actor after all). The old lady had never met Shoebridge before so she wouldn't know him to see him ... then the two of them would have the ten thousand dollars in reward money plus whatever fortune the old lady had.
I mean if you're gonna be a scammer why not scam BIG?