Dreams often serve as a reflection of our emotions and unresolved situations. In your dream, several elements stand out that may relate to your past experiences and feelings surrounding this person and your relationship.

1. Text from the Past: Receiving a message from someone significant in your past suggests that unresolved feelings or memories are resurfacing. It may indicate a desire for closure or an acknowledgment of the impact this relationship had on your life.
2. Legless Woman: The legless woman could symbolize feelings of vulnerability or helplessness, possibly reflecting your past emotional state during your relationship. The fact that she holds a baby may indicate unresolved issues related to nurturing or a longing for deeper connection, innocence, or new beginnings.
3. Transformation of the Baby into a Cat: Cats often symbolize independence and mystery. The transformation might suggest that your feelings or the situation you once perceived as innocent or pure has morphed into something more complex, perhaps highlighting your desire for independence after the emotional turmoil.
4. Chase Scene: The woman running after you but with legs in the end could symbolize the persistence of your feelings or unresolved issues that continue to follow you despite your attempts to move on. The foggy and rainy environment might represent confusion or emotional turmoil surrounding this relationship.
5. Driving Away with Your Friend: This could signify your desire for support from those you trust as you navigate your feelings. It may also represent a need to escape from the complexities of your past.

Overall, this dream seems to reflect the intricate emotions tied to your past relationship, including feelings of nostalgia, unresolved tension, and the struggle for closure. It may be helpful to take some time to reflect on these emotions and consider how they impact your current relationships. Engaging in open conversations with trusted friends or even with the person from your past may provide clarity and help you move forward.