This question cannot be answered without more information. To determine the father of Chloe's second child, we need details about:
- Chloe's relationship status: Is she married? In a relationship?
- The identity of the other parent: Is there a known partner or potential father?
- The timeline of the child's birth: When was the child born in relation to any potential relationships?
Without these details, it's impossible to provide an accurate answer.