Ben notes: This person is not named in any source. Malkovna, as some have placed the name, would indicate that this person was the daughter of someone named Malk. If someone could indicate the source that names her this, that would be great. Until then, she should be indicated as "Unknown".
(Further, would ask the source for the birth and death dates being listed as 920-970, how she was first born, etc. None of these are sourced. There is also no source indicating her name is Olga, or that she was from Liubech, though in theory one can presume that based on Prince Mal's origin.)
Also note: Prince Mal's relationship as father of Malusha is likewise unproved, though possibly allowable as there appear to be a certain number of historians that believe that this relationship existed.