The context of the following conversation is Robin had always said that she would go first, but Sydney always wanting to prove her wrong preceded Robin's death with her own.:
Sydney says I feel so terrible about Robin's death..
The friend responds I understand, it was so sudden..
Sydney responds I thought I would leave this world before her..
The friend responds it is fate, and she has such a happy and wonderful life..
Sydney responds I always joked I would go before her..
The friend responds I remember this, if you are sad, you can always count on me..