When originally they had decided the shot was from the edge of the pool, the piece of plastic in the wound was from the lane divider. However once it was determined that the shot was inside the pool, it could not have hit the pool divider and so no plastic should now be in the wound.
When Angela displays the Wi-Fi account information, the IP address of Madam's Apple router is not possible. Interestingly, instead of the way most productions show fake IP's which is to make one or more of the four sets of three (any single or double digit number has an undisplayed 0 in their place, e.g. 4 is really 004) numbers 256 or higher (255 is the highest possible) but what they did here was to show 5 sets of three which is also invalid.