coutinho hit the only goal of the game as liverpool beat blackburn .
they will meet aston villa in the semi-finals a week on sunday .
liverpool skipper henderson had not slept the night before the game as his wife gave birth to his second daughter .
boss brendan rodgers revealed henderson had no thoughts about missing the match .
` he said to me , `` boss , as soon as the baby 's out , i 'll be coming back '' , ' rodgers explained .