What do girls mean by this? Girls please! - 2

I have an iPhone so can see when people have read my text messages which I sent them. There's a girl I like who I have been texting with loads this weekend, and we've been texting constantly for the past 3 days. Sometimes I can see that she has 'read' my message, but does not reply for several hours. For example, now the message says 'Read at 20:30' and I asked her a question, but she does not reply, sometimes for several hours and sometimes doesn't reply at all. Why do girls do this?

Either:
A. We feel uncomfortable and don't plan on answering for a while.
B. We don't know what to say, think for a while, and forget about it until later.
or
C. We're honestly busy and can't reply.

That's usually how it is for me anyways. Girls are so complicated, right? Haha.

Maybe she doesn't really know what to say. What kind of questions are they? Maybe don't text constantly she probably just needs some space

Sometimes we just forget or get occupied just after reading the question. We also becomeunattracted to people after periods of time. Especially when you text back and forth very fast. She may take this texting way less seriously. She probably isn't waiting excitedly for your text message. If you like her I suggest you talk and interact with her IN PERSON. (sort for shouting)

Keep in mind that attraction has an expiration date so act quickly.

I personally do this when i don't want to lead a guy on… For example, i recently stopped seeing someone and this other guy keeps texting me and said he was interested in me but i do not want to get with him therefore i sometimes don't reply or take a long time to.however, if this girl has showed an interest in you: eg/ flirted with you, then i would just presume she was maybe busy or doing something at the time she read the message. Don't give up if she seems interested, give it a few more days at least and see how it goes.
hope i helped!