You're probably right, Eve, didn't see the deception, is more accurate. However, God clearly pointed out that "eating the fruit of the tree" would cause their mortality.
Perhaps Adam and Eve had become "bored" in their "paradise". So God offered them "free will". The choice to live in their perfect paradise in immortality or to become mortal and corruptible.
The Serpent, the Accuser, had to come up with something that sounded so good, even Adam and Eve would fall for it. The Serpent told them they would "become as gods" knowing both good and evil." In Eve's excitement, the sound of being "a god" was irresistable and the fact that she believed the Serpent when he told her she wouldn't really die (or become mortal). The fruit was good, so she offered Adam a chance to share in her so-called good fortune. Afterall, she loved her husband and wanted to share with him. Then their "eyes were opened" and they knew that they had been deceived. Their immortal bodies changed into corruptible bodies, so they hid themselves from God, so he wouldn't find out. But of course, God is God. He knew.