Looks like those can be custom set by using the 4th argument for wp_mail() function calls, but we never get to that point, so our plugin at least defaults to all of WordPress’ default values.
That said, WordPress core does have some filters that can be used to set the “From name” and “From email”.
/**
* Filters the email address to send from.
*
* @since 2.2.0
*
* @param string $from_email Email address to send from.
*/
$from_email = apply_filters( 'wp_mail_from', $from_email );
/**
* Filters the name to associate with the "from" email address.
*
* @since 2.3.0
*
* @param string $from_name Name associated with the "from" email address.
*/
$from_name = apply_filters( 'wp_mail_from_name', $from_name );
The thing with these is that they would be global to all uses of wp_mail() at this point, and not just our emails.
If you need some help working with the filters, I can provide some example usage for them.