barrier + "take dmg" card - gamemechanic question

Hi there,

i had a weird interaction in a recent game that i don't understand.

Unscarred Reaver on the board. Brightsteel Protector gets played and grants the Unscarred Reaver Barrier.

Enemy attacks with Reckless Trifarian and Unscarred Reaver blocks the attack, knowing that the Barrier will keep the unit alive.

Attack resolves and Unscarred Reaver triggers it's effect, gaining +3 attack.

Barrier reads "Negates the next damage the unit would take.", which i interpret as "the unit does not take any damage at all during an attack without any other effects triggered or spells used."

Unscarred Reaver reads "When I survive damage, grant me +3|+0.", which i interpret as "my effect triggers if i lose hp without dying."

Since Barrier has been active, Unscarred Reaver didn't took any dmg. Why did her effect trigger?

The card say survive damage not take damage.

It's definitely a bit weird, but that is how the effect is intended.

FYI, if you give Unscarred Reaver Tough (e.g., through Chain Vest) and then ping her for exactly 1 damage, she still gains +3|+0 despite her health not changing.