I'm glad to hear from you after long :). yes! #25 was intended to be a little feminine but it served the purpose of attracting your audience quite well as the first target was your daughter. It is a customized font played with the neuron concept. You can keep it as an option if you think you're gona take more openions.
#22 is SN... This is an abstract and you dont necessarily have to write SN litteraly so that its legible. The idea here was not for it to be legible only but convey a message. You can see how they intersect and overlap eachother. Nerveous system is the most complicated of all the human systems I read in my biology classes... I wanted to represent the concept if this complicated and delicate system in a simple way. And I think I did well. But the final word is up to you obviously... many things are not known unless explained well...but the secret in a design itself is a good reason to memorize it :). e.g take a look at FedEx logo
http://fedex.com/ there is a little arrow between "E" and "x" which represent forwardness and relates to the service. Many people dont know about the arrow. Or take a look at amazon.com logo the logo is not just "amazon" writen with a smile underneath but if you notice the smile is pointing from "a" to "z" which is again a secret and relates to the nature of the business of selling items from a to z. Anyway...long story. Let me know if you need further changes.
Regards