>>What if her INTERNET goes down?

That's why I have a second line for her, it has the DSL.
In my case I've had 2 phone line outages in the last 3 years, 7 days the first time, 5 the second. I can't remember any ISP failures.

My biggest concern is the 100k bandwidth needed. I'm in Dallas setting up two way radio systems for the NBA all star game. We use voip to connect repeaters at each end of the convention center connected to pass radio traffic between the two, we get 8 voice channels in 40k.

The NBA uses Cisco voip phones at these events, they only use 10k per phone.
They have huge amounts of bandwidth at these events, I ran a speed test in Phoenix last year and saw almost 7 meg down. They run QOS to make sure the audio quality doesn't take a hit.

Tim - I will have my mom call tech support again and see what they can do for her. I have not seen a list of routers that you have approved / have good results with listed in your knowledge base. I am willing to by a new router if that's what it takes to keep your service.