Kind of sounds like she's very indecisive or she's not really interested in you ! A yes or no would be proper . Maybe you should talk to some other girls and then see if she gives you a proper answer . That's kind of rude saying "maybe" all the time !
Listen to the song "Call Me Maybe" by Carly Rae Jepsen because she probably listened to it numerous times over and over so now she says it to guys when asked questions or it might also be that she is trying to set a hint that your asking WAY TOO MANY QUESTIONS!!!!
To this old broad, it sounds like little miss is playing some game or other (been there, done that, not proud of it). But, they say that turn about is fair play. I bet if you start answering all her questions with "maybe", she won't think it's so clever. At that point you could tell her that she now knows how you feel with her answering all your questions with "maybe".
I'll go out on a limb here & surmise its what you're asking her. If -- like a typical wuss-boy -- you asked her to "go out with me sometime", you get that kind of answer. Don't ask her out like that!! Always invite a gal out to a specific event, day, & time.