Eight matches were contested at the event, including one on the pre-show. In the main event, Bray Wyatt won the titular Elimination Chamber match to become the new WWE Champion, the first singles championship of his career. On the undercard, Naomi defeated Alexa Bliss to become the new SmackDown Women's Champion, marking her first championship in WWE, Randy Orton defeated Luke Harper, American Alpha retained the SmackDown Tag Team Championship in a tag team turmoil match, and Becky Lynch defeated Mickie James.

Based on this passage, who won the women's elimination chamber 2017? Let's give stream of consciousness first:
The relevant sentence in the passage is: On the undercard, Naomi defeated Alexa Bliss to become the new SmackDown Women's Champion, marking her first championship in WWE, Randy Orton defeated Luke Harper, American Alpha retained the SmackDown Tag Team Championship in a tag team turmoil match, and Becky Lynch defeated Mickie James.
So, the final answer is Naomi.