No one is perfect.
Jeremy had a NOTW deal and tried to sell nude pictures of Sheila to the sun.
She did not believe Jeremy would do anything. He was hardly a big time gangster. More a small time farmer.
Her reaction afterwards is normal to me. But appreciate after 29 years you are finding it hard to accept Jeremy is guilty. Although the mountain of forensic and circumstantial evidence has been around for years.
So your only -pathetic- reason you can give for her sluttish and self serving behaviour is to say that "no one is perfect"?!!!!!!!!!!!!!
Jeremy DIDN'T sell his story and if those pictures of Sheila HAD been on offer, the Sun would UNDOUBTEDLY have bought them.
You aren't in the position to know what she thought Jeremy would do and whilst he may only have been a "small time farmer" in your eyes, I imagine Julie saw him very differently.
Actually Adam, since believing Jeremy to be guilty, I find myself believing that Julie was FAR more involved that I'd previously believed her to be.