Well it is best to write back and forth to get to know her. You need to meet her in person prior to filing any K1 petition. The government will want to see pictures and evidence of your relationship. I would not even think engagement until you have met and decide it. You have not met so you need to give it time. Go buy a ticket to China. Look on candle for information on ticket prices. Call Northwest Air or flychina.com In addition, there are great jewelry stores in China if it goes that far. You can get 18K gold, 24K, Platinum, etc. The prices are reasonable.