When Ade realized that Sil was coming not to take her to see her suicidal fiancée but to plug her spine full of automatic rounds, she could have called Artie and asked him to sweep her away to safety. She opted not to do this.

Artie could have taken her to some far flung locale and could have sold his restaurant through a broker from their new home. He would then be able to open a trattoria and she could wait tables. He loved her. He loves her still.

Ade knew all of this, and chose to get in the car, with one of Tony's enforcers, knowing on some level that Sil was going to ventilate her thoroughly. She though about fucking Artie Bucco, thought about getting pulled out of a car by her hair courtesy of Silvio Dante in the forest, and then hopped into that passenger seat. If he only Artie his hair, the woman would probably still be alive.