I have to do a genealogy project and i am stuck on whether there is more to one of my ancestors?

From what it looks like she is german but has the last name of KLINK and from the research i did, says it is of slavic origin. the weird thing is, it comes from my moms side of the family which is also hungarian and it said some where that there were slavs that settled there. to make things even more crazy, the hungarian coat of arms has this cross of lorraine which is also on the flag of slovakia. to tag along with that, my mom mentioned that part of her family lived in czechoslovakia. then she told me to look up bohemia and it came up with germany and czechoslovakia. she also told me to look up moldovia, only it is in romania, but romania is right next to hungary and the doent on moldovia made refernence to hungary. everything keeps on coming up next to hungary and i dont know which part to say were klink may have come from, can someone help?