She only response when I initiate contact

As title says, I would text her. Example

Me: hey you want to do something?

Her: Yes! What do you have in mind!

Then we hang out and have a great time.

But unless I'm initiating contact I hear nothing from her. She dosn't give me cold shoulders its never an awkward response from her. Its always fun and positive sounding like "sure, when?!"

I don't want to seem needy I only ask her out on weekends is she shy..old fashioned, wants to be per suited?
She only response when I initiate contact
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