1. She wants to read the comic book.

2. She wants to read the specific comic book.
3. She wants to read comic books.
=========================
Does #1 mean #2 or #3? Does she want to read the comic book in a bookshelf, for esample?

1 is referring to some specific comic book, as is 2 (of course), but 2 is awkwardly phrased.

3 is different, meaning that she wants to read lots of comic books.

Based on the given context, it is not specified whether "she" wants to read a specific comic book or just any comic book. Therefore, both interpretations are possible.

To determine if she wants to read a specific comic book (#2) or any comic books (#3), you may need to gather more information by asking follow-up questions. For example, you could ask, "Are there any specific comic books that she wants to read?," or "Is she interested in reading a variety of comic books or just one in particular?" By asking more specific questions, you can clarify her preferences and determine if she is looking for a specific comic book or simply wants to read any comic book.