I like the heart in # 14 and the lines fading out, but the dots can make it look like breasts. I am very carefull about sexual misinterpretation, since it can ruin the seriousness. I know its not your intention.
Mona, Designs # 95 and # 96 could work well. Personally I like the # 30, is a design recognizable, memorable, stand out and can be used in different applications.