UK: Queen Elizabeth II's Coffin travels from RAF Northolt to Buckingham Palace.

The speaker felt it was important to attend and place a rose from their grandmother's garden, symbolizing a personal connection and respect. The rose held special significance as it reminded the speaker of their grandmother, who was fond of the queen. The act was a tribute from both the speaker and their grandmother.

What does the speaker mean by saying 'I don't really know'?

What emotions does the speaker express regarding their grandmother?