Short girls' names tend to have a quiet confidence. Many are one-syllable nature picks (Wren, Ivy, Rose), others are international classics (Ava, Eva, Mia). All of them travel easily across languages and pair gracefully with longer middle names.
One syllable versus two
A one-syllable short name (Wren, Eve, June) feels firm and grown-up. A two-syllable short name (Ava, Ruby, Iris) feels softer and more lyrical. Both have their place. If the surname is very short, a two-syllable first adds useful rhythm.