On my golf the power steering is noticeable quite light and easy. On my wifes golf its quite heavy, I've checked the fluid and its on full. The garage who fixed the broken exhaust mount noticed there is a slight weep on the power steering pipe and howed me it was just sweating and he said worth mentioning but not worth fixing not sure if this can cause heavy power steering.
Also a scan shows these two fault codes:
power sterring pressure sensor switch fault ? 00557 - short circuit to earth.
idle speed regulation sporadic 00533
...when started the idle is a little like its hunting for s few seconds. Just the power steering heavyness makes it a bit hard for her to drive.
the car is a 1.6 8v 1999 AEH engine auto which drinks petrol lol