No matter what a girl texts you, never respond or answer the question. The only exception is when setting up logistics.  That is what texting is for! This should be the only time you ever acknowledge or send her texts. It will train her to avoid stupid text-game bullshit with you.  Every time you entertain such drivel, you are essentially increasing the chances of fucking up the frame the more you interact.  Simple statistics.

'Why haven't You talked to me today?' Ignore.

'Did I leave xXxX at your place?' Ignore.

'Why aren't you texting me back?' Ignore.

The response to any of these comes when you text back at YOUR convenience while simultaneously pitching a meetup time.  Kill two birds with one stone:

'Lets talk about it at 8:00pm at xxxx'

Anything beyond an enthusiastic and immediate 'Okay' from her warrants further ignoring and contacting another option.

You don't owe women shit, and that includes an explanation why you don't text back like a good soyboy orbiter-in-waiting. The method above establishes dread by default and subcommunicates that your time and attention is valuable.