Hi Cliff
So sorry to hear of your wife's health problems I hope her doctors are able to find out what is happening with her.
As to your question:
"Has anyone been though treatment for Hepatitis C over the past few years and come to find they are more prone to picking up infections ? "
Actually no one has been treated with Victrelis for a while now since the new generation treatments with the new DAA's (direct acting antivirals) were approved in late 2013 and 2014. You may have seen TV commercials for Harvoni. Treatment today is very different from what your wife experienced. Harvoni treatment for example could be as simple as 1 pill a day for as few as 8 weeks and curing about 98% of patients with no prior treatment and little to no liver damage.
You may want to try your question in the Hepatitis C; Post treatment forum
http://www.medhelp.org/forums/Hepatitis-C-Post-Treatment-Issues/show/1670
Hoping you find answers that can help you wife.
Good luck