In message 2,
DerbyBorn writes

What should she consider - and Extender that appears to boost the signal or
a system that uses two 13amp plug in things to use the house wiring?

You have had plenty of replies, and yes, running a proper cable is the
way to go, but not always practical. We have been using Homeplugs for
years, with great success. We use Solwise, and they just work. They
are plugged in and powered up permanently. We began with the non wifi
ones, then switched to wifi when they were introduced. One has died and
had to be replaced.
--
Graeme