Croatia's Ministry of Internal Affairs runs a large database of missing persons on this site www.nestali.hr
All information on Lidija Pale is plucked from that site, but the information they provide is quite scarce.
They currently have 2625 missing persons listed but search options aren't very user friendly unless you have a specific person in mind.
There are basically three types of filters but all three are shaky in some way.
The first one provides four options: ''sve nestale osobe'' (all missing persons), ''djeca'' (children), ''odrasli'' (adults) i ''nestale u ratu'' (disappeared in war). However, if you pick the option that shows only children, the only persons depicted are recently missing children so Lidija will not appear.
The second one provides two options, one to list persons by surname (''po prezimenu'') and the other by the date of disappearance (''po datumu nestanka''). The filter is useless, it doesn't sort the dates correctly at all.
The third one is completely useless and vague. ''Uzlazno'' means upwards and ''silazno'' means downwards.
They have a Facebook page and their e-mail address is nestali@nestali.hr if you want to contact them and inform them about Beth Doe's potential Croatian roots. I don't know how responsive they are and Beth Doe is a rather old case but some exposure of this case in Croatia wouldn't hurt.
The new website is: Nestale osobe