Diggin4moreinfo, welcome to the forum! The good news is that your mom is basically healthy and still young. Her diet is also good, and she doesn't drink or smoke. Those factors alone are very favorable to her prognosis. She sounds like a very motivated person, so I think she will do well.
Whether or not your friend has looked into transplant, the hepatologist at the hospital may consider it, depending on other factors. OTOH, if she is as ill as it sounds, they may feel she is not healthy enough to make it through surgery. With so few organs available, they want good candidates for transplant and survival.
The data you provided is interesting. I knew that they can tell if the treatment is working at one month. Whether a treating physician wants to base withdrawal of treatment on a 24-hour test would be up to that physician. If I were the patient, I'd want to give it more time--at least a month or more.
In your particular case, I can understand your concern about hep C. My suggestion would be to request a hep C test every 6 months, as well as liver enzyme levels every 3-6 mos. It usually takes several decades before symptoms of hep C surface. I have hep C, diagnosed per bx in '93, but my liver enzymes were never triple high-normal, even when I had liver cancer. I first had elevated enzymes 2 years before I was tested for hep C. There was no test for hep C prior to '92. My doctor at the time just said my liver enzymes were a little elevated, but it was nothing to worry about. I changed docs due to insurance the following year, and the new doc followed up with hep C testing, which was positive.
Was your friend's hep C contracted during that tattoo session? If not, you are probably okay, but it's best to be tested every so often for your own peace of mind.
"But that was yesterday, and I was a different person then."
Alice in Wonderland, Lewis Carroll