Is the drain she is using for the waste a mains drain, storm drain or combined? If it's a separate rainwater/storm drain then there are likely water bye laws that prohibit discharge of washing machines as they ultimately end up in water courses and rivers causing pollution. Tell her that regardless of where she wants to attach the pipe, you can't condone her breaking water bye laws.
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local