What does it mean if you ask a girl who text you everyday to hangout and she changes subject?

If a girl who texts you every day changes the subject when you ask to hang out, it could indicate that she may not be interested in taking the relationship to a more personal level. She might feel uncomfortable with the idea of hanging out in person or may have other priorities. It's also possible she simply prefers the texting dynamic and isn't ready for face-to-face interaction. Pay attention to her overall communication style for more context.