Is she interested in dating?

I was texting my co-worker and she assumed I was asking her out. When we spoke in person she asked me if I was asking her out in which I replied with no. But the whole time she was asking me she was blushed real red and just lost for words and just very edgy. I later texted her and told her that if I did ask her I tell her in person but knew what her answer would be. When she asked for an answer I said no. In reply she wrote (lol well guess you never know) Is she trying to get me to ask her out, or teasing, or just messing around? Any ideas what she may mean?

Is she interested in dating?
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