If she is comfortable & able to walk as before you should not worry.If she cries on ankle movement, refuses to bear wt on affected side, has local swelling or bruising ,she mostlikely has ankle sprain
& the sound is called ligamentous click.
A ligament is the fibrous tissue that connects bones to other bones.
in ankle sprain will most likely be normal.
The treatment of ankle sprain in immediate phase is RICE (Rest, local Ice application, Compression & Elevation)
Hope I have answered your query.