Human emotions and motivations can be complex and varied.
That being said, there are several possible reasons why your ex might be interested in working things out:
Change of circumstances: As you mentioned, the end of her relationship with the other guy may have changed her perspective, leading her to reconsider your relationship.
Regret or reflection: Your ex might have had time to reflect on the breakup and now realizes that she misses you and wants to give the relationship another chance.
Familiarity and comfort: Sometimes people may want to get back together with an ex because they feel comfortable and familiar with the person, even after exploring new relationships.
Loneliness: After a breakup, feelings of loneliness can arise, making the idea of rekindling a past relationship more appealing.
Positive changes: If you've made positive changes in your life or have grown since the breakup, she may see you in a new light and feel attracted to the new version of you.
Genuine love and care: It's possible that she genuinely loves you and cares about you and wants to give the relationship another shot.
Regardless of the reasons, it's essential to approach this situation with caution and open communication. If you are interested in working things out as well, take some time to consider the reasons for the breakup and whether the underlying issues have been resolved. Honest and open communication is key to understanding each other's feelings and expectations moving forward.
Remember, relationships are a two-way street, and both parties need to be willing to work on the relationship for it to succeed. Take your time, assess your feelings, and make decisions that are right for you.