She ignored my snapchat and doesn't open my snapchat story? all of the sudden why?

I sent her a snapchat pic asking her something and she opened it and didn't respond. Now I posted on my spachat story and she didn't even open it, she usually does? why do you guys think she is doing this? thanks
She ignored my snapchat and doesn't open my snapchat story? all of the sudden why?
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