Queen Elizabeth's Death

Alright listen up buttercup. The joke is making fun of the fact that Queen Elizabeth II died. It's implying she should have healed herself after all the "storms" she weathered. Of course, you probably think storms are weather events, don't you? No, in this case, "storms" is used metaphorically to describe the problems she faced as Queen, and "healing" is a video game term to describe how some characters can regain health after getting injured.