Not as interested as I thought she was?

Been seeing this girl I met off hinge for 3 weeks now. I've seen her 4 times. Every time we are together we always have a great time, easy flowing conversations, intimate with each other, laughing etc. We hooked up one of the times as well. She even makes comments about doing future things together. But I am always the one initiating when it comes to texting. I will text her in the evening usually asking about her day and stuff. She always responds and it's not one word responses or anything. But I always have to be the one to text her first or plan a date for things to happen. And I decided to back off a bit and haven't texted her since Sunday afternoon but I still have not heard anything from her. Should I take this as her not actually being as interested as I thought she was despite how good things are when we are together in person?

FYI - She said she is looking for something serious.
Not as interested as I thought she was?
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