First some background. I'll try to keep it brief.

I volunteer weekends at an animal shelter. I've been doing it about 6 years. About 4 years ago a girl my age who was a former volunteer became a full time paid staff member. I see her maybe 3 times per month when I go up there. I don't ever see her outside the shelter, so while we're pretty well acquainted, we're not really close friends or anything.

I've been interested in her for a while. I never asked her out because she used to have a boyfriend. She might still have a boyfriend for all I know, but I haven't heard her mention him for about the past year, so either they're really serious now (if they've been dating four years) or they're broken up. Or maybe she has a different boyfriend, I don't know. I happened to see her Facebook relationship status was single, but I know that can't necessarily be trusted.

Anyway, today I finally decided to try to make a move. While the two of us were alone working with some animals, I was making small talk, asking how work was going, if it was really busy, and asked which days of the week she had off (since she obviously works weekends). Then I asked if she would be interested in the two of us getting together outside of the shelter some time.

After a brief pause, she said "Maybe" then instantly changed the subject "Hey what is that?" referring to a something on one of the animals we were working with. A few seconds after that, she walked a few feet away to see the animal in the next enclosure over.

After spending a little bit longer with the first animal (not more than a minute or two) I got up to join her at the neighboring one. She immediately walked back to the first one I had just left.

She never said anything else about the matter after that, and I didn't push it.

So, she gives a non-committal answer, instantly changes the topic, then tries to put physical distance between us. That's how I'm interpreting it at least. Is this the brushoff it appears to be?