My mother's Hibiscus plant appears to have a disease, not too sure if it is, or if this is even normal for this type of plant as I'm not too familiar with plants. It has her worried and I was wondering if there is anyway to heal the plant. It's been on going for about 2 months now.

It appears to have a white fungus all over it that engulfs the limbs, and spots the leaves. Most of the leaves have fallen off, but some are still green and holding on, but have white spots all over them. I tried doing some research on google for it myself, but ended up here.

I'm not sure if it's related, but a relative was sick and had vomitted into the plant ( yeah I know, gross), but I wanted to just point that out, to make sure that it didn't end up getting sick because of that.

I don't have a very good camera, so I took some pictures with a low quality cellphone camera. If anyone can give any information on this, I'd much appreciate it, thanks in advance.