kane, you are quite right. I sell glass, so I do look at it differently than a collector would. Selling it tends to make us harsh on damage, since even a little damage usually means that it won't sell. It is a pretty bowl. Since Rose is a collector, it will be very nice for her.
There are many people in the USA that have the instruments they need for grounding and polishing glass. I used to have one person who would buy the mildly damaged glass and polish out the damage. He was a collector. I never saw his work, since he didn't resell, so I don't know how good it was. I do see attempts at repairs very often on Murano glass birds. The repairs usually end up looking worse than the original damage, most likely. Most people don't have the expertise to finish the glass correctly, so the glass ends up looking filed, with unpolished flat places that should be round and shiny. The rim of Rose's bowl is a good example of the look of glass that has been ground down.
There is one good thing about the repair. The bowl will fit into a smaller space. The original bowl was quite wide and would occupy a whole table. I do like the pattern of her bowl. Some apparenza pieces are prettier than others. I like the center of Rose's bowl better than I like the one in my picture.