I WONDER - Who Was Violet Jessop?

The transcript discusses the sinking of the Britannic, a sister ship of the Titanic, both made by the White Star Line. It highlights Violet Jessup, who survived the sinking of both ships. Initially a staff member on the Titanic, Jessup later became a nurse on the Britannic during World War One. Despite the Britannic hitting a German mine and sinking, Jessup survived again, earning the nickname 'Miss Unsinkable'.

What was the relationship between the Titanic and the Britannic?

What nickname was Violet Jessup known by after surviving the sinkings?