I too use Firefox - most of the time (occasionally if at work on one of the network's puters, I check n on Explorer but am not fond of it and am dubious of its security so much prefer Firefox or Oprah or Netscape products).
I think she might try Firefox. I know she used Dialup and that may be one of the issues.
Someone in my office had been complaining about access to the internet in general(at home) - had called her ISP and tried a variety of other steps to no avail. She finally discovered that on their home wireless network, the computer she used was hardly plugged in so half in, half out. I wonder if something similar with Frenchy's ISP. She should ask them to check the infrastructure and hardware.
I hope she figure out the problem.
"There are two means of refuge from the miseries of life: music and cats" Albert Schweitzer