Hello!

With the changes to group mob leash mechanics, Simone the Seductress is significantly harder now and not how she was in classic.

Here is a list of comments from 2006 saying they could trap the pet, kite Simone away, and then the pet never shows up again:

classic.wowhead . com /npc=14533/simone-the-seductress#comments

Now, admitedly, there are other strategies to use (such as grabbing magic dust from Westfall and continually sleeping one of them)

But, in the spirit of keeping things as they were, this is now bugged and not working properly.