2FAuth/app/Http/Controllers/Auth/ResetPasswordController.php

<?php

namespace App\Http\Controllers\Auth;

use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use Illuminate\Foundation\Auth\ResetsPasswords;

class ResetPasswordController extends Controller
{
    /*
    |--------------------------------------------------------------------------
    | Password Reset Controller
    |--------------------------------------------------------------------------
    |
    | This controller is responsible for handling password reset requests
    | and uses a simple trait to include this behavior. You're free to
    | explore this trait and override any methods you wish to tweak.
    |
    */

    use ResetsPasswords;

    /**
     * Get the response for a successful password reset.
     *
     * @param  \Illuminate\Http\Request $request
     * @param  string  $response
     * @return \Illuminate\Http\RedirectResponse
     */
    protected function sendResetResponse(Request $request, $response)
    {
        return ['status' => trans($response)];
    }

    /**
     * Get the response for a failed password reset.
     *
     * @param  \Illuminate\Http\Request $request
     * @param  string  $response
     * @return \Illuminate\Http\RedirectResponse
     *
     * @codeCoverageIgnore Can't find how to test this :/
     */
    protected function sendResetFailedResponse(Request $request, $response)
    {
        return response()->json(['resetFailed' => trans($response)], 400);
    }
}