"Zrcátko poskládané z několika kousků".
Alinino zrcátko (actually called rozbité Alinino zrcátko in the dialog) is a quest item which takes quite a bit of work to get. Geralt must first find all kousků of the mirror, which are scattered about the pole outside vesnice v Bahnice. Then he must have them reassembled by either kovář, or elfí řemeslník. In either case, it costs 100 to have this done.
Once reassembled, the mirror is used to try to help Alina's spirit pass on.