She will be rewarded many times over for what she is doing. I go on at least one mission trip a year. This year however I have been on 2 trips. One to build 9 houses in 2 weeks in Gulfport Ms and one to Montana to help build a church. I always leave expecting to make a difference in someones life but when I get home it seems like it always makes a diff in mine. I can understand your concern but prayer will help all you you through this trip. I know you are thankful she is going on this trip. It says a lot about you and your family for raising her right. You are blessed!!
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God Bless and I will pray for your family right now!!