How to get my female friend to text first?

My female best friend rarely texts me first about anything. If she does, it's usually for help with study. She suggests fun activities we can do together when we hang out in person, but I am always the one who has to initiate and organise these plans. How can I increase her interest? She's very shy so I don't know if that plays a part?

How to get my female friend to text first?
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