[GAMEPLAY] Miss Fortune with Death's dance

I decided to try out the new item called "Death's dance" on Miss Fortune as I have seen others use it. It seems ideal for her because of the heal she gets on her ultimate. However its passive seemed interesting. It deals 12% of the damage taken over the next 3 seconds, possibly increasing her time alive by a split second. However this is not important.

From League of Legends Wikia: "Strut: PASSIVE: After 5 seconds of not losing health to non-periodic damage, Miss Fortune gains 25 bonus movement speed, which increases to a greater amount after another 5 seconds."

Combine this with her active and having taken damage over the last 3 seconds, without further damage added on, she should not lose her movement speed bonus, as Death's dance damage is periodic. However she does lose her movement speed from Strut.