Don't stay up all night tho but since its your mom you should know when she usually wakes up. Set your alarm at like 30 mins before she awakens, get outside and wait for the delivery guy. Sit anywhere out of your mothers sight but it should still show that you live in that house, otherwise the delivery guy might think you are trying to steal it. Receive it and hide it in the bushes or similar. Then sneak it inside later on the day when you get the opportunity.