I have a similar question relating to the contact form as I want to change the text in the form fields. (i.e. from ‘Your message for us’ to ‘Your message’)
From the posts above, I can see where to edit this in the contact-shortcodes.php file. To avoid editing the original theme files, can this be done via a child theme?
Also, is it possible to have this text as lowercase? Where can I find the setting for this?