She invites you to get out with her pals, implying that she regards you favorably. This might also indicate that she is interested in you and wants her friends' approval (this is not a frequent case, so don't jump to conclusions). In any event, it's good manners for you to go out with her friends once they have invited you. The purpose of this exercise is for you to learn how to read between the lines: most of what women say is not meant explicitly. Women often want us to understand their intentions, so they will sometimes explain things deliberately after the fact. For example, if a woman says "I like your shirt" when you're wearing something that she doesn't like, there's no need to worry about her saying "I like it" just to be polite. She has already told you what she thinks about your clothing. Now, there are times when a woman will say something without really meaning it. For example, if you ask a woman on a date and she says yes, she might change her mind at the last minute. Or maybe she just wants to appear friendly even though she really isn't. In general, however, it's important to understand that women's words aren't always meaningful. A lot of what women say is simply part of their culture-bound behavior patterned after men.