Nice try, but...no. There was Ao (in the distance), Selune, Shar and then Chauntea (the first offspring between between the sisters). Shar objected to the creation of anything after Chauntea; she was content to have their domain remain otherwise lifeless.
What do you mean "nice try?" I'm asking a question. Do you feel like you're winning a game and putting feathers in your cap? I'm not sure we're having the same conversation.
But since we're going down this path, I will point out that Shar not wanting all the light initially does not equate to Shar having an active and current goal to get rid of all the light now.
And if Shar does want to get rid of the stars because she prefers the dark, it doesn't mean she wants to get rid of life in other planes of existence.
Unless I'm blanking on certain exceptions to the rule, pretty much all of the gods unique to the Realms are concerned with...the Realms. The fact that Shar went to war with her sibling over this disagreement demonstrated how violently opposed she was to the notion of bringing about more life. Finally, swearing eternal revenge on this matter is fairly self-explanatory; Shar may be more powerful than her sister, but Selune has a greater amount of allies on her side AND there are now additional gods that want to rule/care for Toril (and are therefore opposed to Shar's long-term goal of reducing the world to nothingness).
If Shar had the means, she would gladly seize the opportunity.
