CodeRage
Death by Magumba!
Most likely it is the salmon and someone in the kitchen played around with it. I know people who used to work at restaurants and when someone sends something back it's very possible they will screw with it. Throw it on the floor, toilet, etc. Other possibilities I am not going to mention at the risk of making you sicker.
Sorry.
**Edit** Your daughter had the salmon but FYI be careful when you send something back at a restaurant
Never happened at any restaurant I cooked at.
It is tempting on multiple returns on the same plate because some one doesnt understand what they are asking for. Like medium is going to be pink and fairly warm on the inside. After the 3rd return it is a piece of shoe leather and then they are happy.
At least once a week a jewish or islamic person would send back a BLT with strict instructions to remake the whole thing without Bacon.