Ladies: a female acquaintance (language partner) suggests getting dinner, is she interested?

We're both university students and the university's language program paired us up as language exchange partners. We've met up for language exchange five times now, mostly at a cafe or at the library, but once at her apartment at her suggestion. At our latest meeting the topic turns to food, and she suggested that we try dinner at a restaurant some time.

I'm new at this, but does this show that she is interested in something beyond a language partnership or friendship?