I returned last week from a trip to Maryland to see Sumwonlovesyou and her children: a 3 year old filly, and a 2 year old gelding.
They were in a pasture with six other horses. I called her name and she ambled over to me.
This is her daughter, who is very sweet:
Yes, she does look a lot like her mother, as you can see in a side-by-side shot.
And she does have just a shadow of the same marking on her forehead like Sumwon.