Theme_My_Login_Form_Field::get_label()

public function get_label() {
    /**
     * Filters the form field label.
     *
     * @param string                    $label The field label.
     * @param Theme_My_Login_Form_Field $field The field object.
     */
    return apply_filters( 'tml_get_form_field_label', $this->label, $this );
}

View src/includes/class-theme-my-login-form-field.php, line 268 on GitHub