When Samuel prophesied and anointed David king of Israel, it was when he was still a young lad. It took (I believe 25 years) for him to take that place but in the meantime he had to go through things in his life to prepare him for that place of ruling and he encouraged himself in the Lord.
Ashten has been told by God that she will marry Nathan. Nathan is not cooperating, but this is what I got...she is to stand, not looking at what she sees but looking to Yeshua/Jesus the author and finisher of her faith. A song came to me within the last 15 minutes that I had not sung in years and it goes like this:
Let's forget about ourselves, magnify the Lord and worship Him.
Let's forget about ourselves, magnify the Lord and worship HIm.
Let's forget about ourselves, magnify the Lord and worship Christ the Lord
worship Him, Jesus Christ our Lord.
I 'feel' the Lord is saying to Ashten, continue to stand, place Nathan in the Lord's hand and care and just worship Jesus. Don't allow what she sees to affect her faith or trust in God. Don't allow the hurt to take hold, because that is not who she is in Christ. She is more than a conqueror through Christ who strengthens her. In Yeshua's name. Amen.

I have a friend in a similar situation and she has had dreams and visions of this man she is to marry. His parents aren't in agreement, but she is still standing.