Read the following passage, then answer the question that follows.

Two months after Lexi fell and broke her ankle, her doctor showed her the x-rays of her healed bones and told her it was safe to walk again. Her physical therapist agreed with the doctor and encouraged her to start taking steps without courage. But no matter what they said, Lexi just couldn't overcome her fear, and the more she thought about it, the more scared she was about ever walking again.

What type of conflict is the above passage?

Character vs. character
Character vs. nature
Character vs. self
Character vs. society