Is my coworker interested?

When I started working in a cafe I worked with this cute girl and she showed me the ropes. I think I caught her glancing at me a few times.
I kinda like her even though she's 3-4 years older than me. Today I got to work with the cutie for a few hours.
We talked A LOT. She kept laughing and smiling when we talked.
I texted her a few times and sometimes she's nice, uses blushing emojies, likes some stuff I post on the company group page but sometimes her texts are short and simple as if she wasn't interested.
I texted her today and asked if she's free this week but she hasn't responded yet and I'm not sure if she was just busy and/or forgot (she did say she might go on a short trip with her familiy)?
Maybe I'm overthinking everything but do I have a shot?