Hi Carolyn

The theme don't have an option for a alternative mobile logo. But with some small code changed it would be possible.

Please upload your mobile logo via the Media tab and copy the URL of the logo image.

Then use the following CSS to display the logo:

@media (max-width: 480px) { 
.header .navigation .navbar-brand img { display: none; }
.navbar-brand { width: 250px; height: 90px; background-image: url( 'your-path-to-logo-image.png' ); 
}

That should do the trick.