And this question is from someone who purports to know scripture?
Why would God decide to allow the eating of a fruit that would cause death to creatures he designed to live forever?
She was not unintelligent, nor was she unacquainted with the consequences of disobedience.
There was no death in the garden apart from disobeying this one simple command.
This tree was God's property and they did not have the right to even touch it.
Respect for their Creator and what belonged to him, and obedience to this one command posed no hardship whatsoever to them.
There was every kind of fruit tree for the taking, including the "tree of life" which was also in the garden to ensure their continued existence. (Gen 3:22-24)
God spoke to Adam through an angel...Adam educated his wife as head of his fledgling family. Eve reiterated what her husband had told her concerning the fruit that they were not to touch. She not only disobeyed her husband, but also their God. She stole that which did not belong to her and then influenced her husband to join her. There was no excuse for what they did. They were physically perfect and morally driven by the exercise of their God-given conscience. It was pure selfishness on their part that drove them to disobey and choose death.