However, some possible options you could consider include:
* Austina: This is a direct feminine form of Austin, simply adding the "a" ending.
* Austine: Similar to Austina, but with a slightly different spelling.
* Austra: This is a shorter, more modern-sounding option.
Ultimately, the choice is up to you! If you're looking for a name with a similar sound or meaning, you might also consider names like Augusta, Autumn, or Aurora.