Girls, After the first date, do you wait or text first?

ozzzzy
Ok, so, one girl added me on Instagram because she saw my photo when I tagged me and a friend, and she is on his friend list. So I texted her first, and we agreed to go on a date. On that date, she was talking a lot about her and her family, her dating experiences, etc. We walked for 2 hours, and talked another hour close to her house, and then she mentioned that we should walk again these days, I agreed.

So, do yo girls say that sometimes out of politeness, even tho you don't like a guy, or only when you really mean it? Because two days has passed, should I text her tomorrow or these days because maybe she will not reach out first. And I guess if you spend 3 hours with someone, that means that you're into them? She wasn't asking me that much questions, nor was trying to be close to me.
Girls, After the first date, do you wait or text first?
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