The area that's now Romania has always been a migratory crossroads for millennia. I'm guessing you showed up as not having "Europe East" in your results? DNA inheritance is largely random and it's possible that the DNA you inherited from your mother is simply not specifically Europe East but from other influences that were present in that area.
Romanians are a blend of the original indigenous Thracians/Dacians, a people who were later conquered by the Romans (hence "Romania"), Roman colonists who settled the land when it was a Roman province, bringing the Latin language and intermarrying with the Thracians/Dacians (and the colonists were Roman citizens from all over the Roman Empire, including from places as far off as Spain, Greece, or Syria), Slavs who settled all over Eastern Europe and the Balkans during the Dark Ages, and other influences from Bulgars, Magyars, Cumans, Tatars, and more. Also, there were Saxon Germans who settled in Transylvania in pretty large numbers in the Middle Ages, a Jewish population, Gypsies, and other ethnic minorities present.
In any event though, that whole region has always been subjected to extensive invasions, migrations, and colonization throughout history, which your results may simply be reflecting.