Might I suggest you HARD CODE your IP settings. It might be that the dhcp isn't working properly or in a way that Audrey and the router can handle. By slamming in static IP address, gateway, and subnet mask values, you prevent this from being part of the problem. You might have noise on your power lines in your home. Try ping tests after you hardcode the ip settings.
If your router is using 192.168.1.xxx, set the router's internal static IP as 192.168.1.1. Audrey : Subnet mask 255.255.255.0, gateway 192.168.1.1 (your router), and maybe something like 192.168.1.10 for Audrey for the static IP address (assuming your dhcp range starts at 192.168.1.100).
If you do a ping -t 192.168.1.10 from a PC on your LAN, it should get a speedy response and no errors, period. If you have errors, check your cabling. One of them might not be working well, or maybe a questionable port on your router.