Hi, got a girl's number today, we were texting for a bit. She seemed interested, laughed, kept the convo going herself as well, asking questions etc, she responded within seconds.

Then i told her i would be right back, did some stuff and checked my phone after like 30min and she texted things like you still there, you take too long haha etc

Told her i was busy and we texted a little bit further and then i deciced to say 'lets go out for drinks'

She still hasnt replied

Should i wait before making any assumptions or am i being played?