Hi, Veryconfused. I also want to welcome you to the forum. As Lucy stated, cirrhosis is determined by a liver biopsy. One of the symptoms, though, is ascites and edema. It is a result of the liver not functioning properly.
Has your mom stopped drinking? If she doesn't, she will be hastening her demise. However, as Lucy also said, liver disease is a very individualistic thing and each person is different, so there is no way to tell at this point how much longer she has to live. I can tell you, though, that if she doesn't stop drinking, she will not even be considered for a transplant when the time comes.
Liver enzyme levels are not always the best indicator of what is going on. They go up and down. Although I have hep C and had liver cancer at one point, my levels have never been really high and a couple were sometimes normal.
You said that your mom went to the hospital. I assume you meant to the ER. She needs to get a hepatologist to help manage her liver disease. She should be on strong diuretics for the edema and ascites.
Portal hypertension is also another result of a failing liver. The doctor she saw should have recommended she see a specialist--and perhaps he did, and she just didn't tell you. An alcoholic is not going to want to be told that they can't drink. They lie to doctors about how much they drink, as well as to family. And some doctors will not want to waste their time on liver patients who are still drinking. I know because I'm a sober alcoholic (sober for 22 yrs.) It will do no good to nag her about it, either. She needs to decide on her own that she needs help. I agree that AlAnon meetings might be of help to you. Whatever you do, don't allow yourself to feel guilty. You didn't cause it and you can't cure it.