Was she talking to me?

I had an incident with a Dutch woman 1 day in the elevator in our apartment building. It was just the 2 of us and she was speaking Dutch. Finally I asked her "Spreek je Engels?" which means "Do you speak English?" She turned to me and said, with what I heard was a bit of a tone, "Ja! Ik spreek Engels!" (Yes! I speak English!) and then continued speaking Dutch.

I have yet to determine if she thought I was taking a survey of which people in NL can speak English or if she was actually on her phone's hands-free and was talking to someone else.

Either way, now whenever someone starts speaking Dutch to me and I cannot understand what they are saying I reply "Ik spreek Engels" (I speak English). That seems to eliminate any confusion.