I think your standard for perfection is too low. When your sister's friends all get food poisoning, you'll realize that it was far from perfect.

Food poisoning is no fun, I’ve had it before from someone else’s kitchen. But it’s symptoms also look a lot like the common flu so it could be either. Food poisoning is usually fast, whereas the flu has a longer period between exposure and illness. Handling uncooked meat, poultry, fish, and even eggs is a source for salmonella germs which causes most food poisoning. For the guests, the greatest risk is if cross contamination occurs from the raw meat, poultry, etc. to the uncooked foods like a salad. This can occur from work surfaces or a cutting board or knife or the cooks hands that was not adequately washed off after being exposed to the raw meat. Adequately cooking the meat, poultry, fish, eggs will reliably kill the salmonella germs so that’s not often the route the food poisoning usually takes (unless it was undercooked). For the cook, the primary risk is handling the raw meat and then eating something with hands not adequately washed off. So it’s possible for the cook to get food poisoning even if the guests do not - It depends on the way the contamination spread. Always wash off your hands and all work surfaces well with dishwashing detergent immediately after handing raw meat, poultry, fish or even raw eggs. I personally go one step further and use peroxide (the kind that comes in the brown bottle from the drug store) on a paper tower and then wipe down the counters with that. It is cheap and effective and is odorless. I hate food poisoning!