It has been around a hundred years since Star killed Nightwing. A lot has happened. Star and Morningleaf have had seven foals all have been killed or have died. They were ether born dead or died of a illness or have been killed by other steeds. Only one foal has made it to be adult. Her named is Riverleaf. Riversun join River Herd from Blood Herd, the steed who hate Star. That is all you need to know.
  Star and Morningleaf are dead. Morningleaf die after giving birth to Riverleaf. Then a pleage  came.  Before Star dead a side effect of the pleage Star got a bit of the golden Starfire back.  But because of Morningleaf's death Star wish to see her soon in the golden meadow. So he used in on his cousin Starfrost because he was the mate his only filly had chosen. He used it to make Starfrost young again.

Frostfire and Larksong joined River Herd but after having a few foals Larksong die of the plague. Frostfire dead  after a twenty ice tiger attacked him.