It's really good. Please update soon!

I like it so far. Please write more!

I like this. Please write more.

The plot sounds like it has potential, and Gilly Ploughman sounds like a good name for a hobbit

However, Gilly Ploughman starts off being described as a woman and ends up as a hobbit.

If she's a hobbit, she would struggle in mounting the pony alone with an unconcious male hobbit - and she would have had to dismount at some stage in her journey to Minas Tirith

ALso there's a lack of continuity. One minute she's riding into the throne room at Minas Tirith, the next she's being greeted by Eowyn in Ithilien. Did Aragorn send her away? It seems unlikely.

It must be approaching 10 miles from the Shire to Minas Tirith,- I don't think a pony could make it in a week

If it's Minas Tirith she's arriving at, it's a city, not a castle

Her progress through the lower levels of the city to the Citadel of the seventh level seems a bit abrupt. Also, no horses are allowed in the citadel - even Shadowfax was turned away, so I don't think your pony would be allowed. And riding into the throne room would be just plain rude.

The doors of the seventh level lead into courtyards and lawned areas, not straight into the throne room

I would suggest that you read The Return of the King, Book 5, Chapter 1 for Tolkien's description of Pippin's arrival at Minas Tirith.

You need something to indicate the change of scene from Gilly in the throne room to Eowyn and Faramir in their bed chamber in Ithilien eg asterisks (not sure what FF allows)

It seems unlikely that Merry would regain consciousness just as Eowyn whispers to him.

In summary you seem to gallop from plot device to plot device without pausing to sufficiently set the scenes.