"David is 13 years my senior and has much more experience"

In this quote, Anna Friel is describing the age distinction between her and David. She is indicating that David is 13 years older than her, and as an outcome, has more experience. This could mean that David has more life experience, more understanding, or more expert experience. It could also imply that David has remained in the same field as Anna for longer, and for that reason has more competence. Anna is likely referring to David's experience in a favorable light, as she is acknowledging the fact that he has more understanding and understanding than she does. This might be a sign of regard, appreciation, or perhaps envy. Regardless, it is clear that Anna acknowledges the reality that David has more experience than her, and is likely aiming to him for guidance and guidance.