If a girl continues the conversation and ask questions when texting, does she like me or could it just be a friend thing?

I'm good friends with this girl but I feel like I'm friendzoned but I'm not sure. When we text she would try asking a question back to continue the conversation for example:
Me: How was your day?
Her: It was good wbu?
Me: It was great haha
Her: Did finish that paper yet
Me: yeah just finished
Her: When's your final?

From what I'm concluding is that she's me like a little brother to her. Or could it be something different?
If a girl continues the conversation and ask questions when texting, does she like me or could it just be a friend thing?
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