Final answer:
Rivka became strong-willed through her own individuality, experiences, and inner strength, which allowed her to reject societal expectations and focus on her own desires and charm.
Step-by-step explanation:
The character of Rivka became strong-willed through a combination of her own individuality, experiences, and inner strength. The passages provided describe her rejection of societal expectations of women and her focus on her own desires and charm.
The text suggests that her youth, love, and relationships allowed her to develop a sense of self-reliance and resilience, leading to her strong-willed nature.