Multiplicity and doubling rather than deathly repetition

1. What does "multiplicity and doubling rather than deathly repetition" mean?

2. Does "double-edged address" in the following text mean "the doubling aspect"?

Text:

The concept of narcissism is, according to Freud, key to the work of art. Chapter 4 will take the work of artist Mary Kelly both to explore and critique this concept, particularly in relation to the feminine. I will suggest that there is a particular form of feminine narcissism which centres on multiplicity and doubling rather than deathly repetition, proposing this form of masquerade as a challenge to Freudian ideas about female desire. I shall explore this potential and its pitfalls further in relation to the double-edged address of the work of artist Jemima Stehli.