No. "The smiling girl" is a sentence fragment, and this is a full sentence with a conjugated verb. Furthermore, we haven't learned participles yet. When eventually you do learn participles (when the expanded tree comes out), you'll learn that to say "the smiling girl" you'd need to say līrare riña.

Līris is a verb by itself and conjugates. Like Spanish, German, and several other languages, the verb by itself is fine to render what in English we call the present progressive.