. >> reporter: as for kristin hinson she is hoping that noah will remain symptom free. with her latest child, nine month old lucy, good news, lucy is not showing any signs. >> i got to say this is bittersweet. had you known this before you had your two other kids you might have been able to engage them in the same way. >> yep, sure, hindsight, it's a hard place, we try not to go there too much. but it would have been very beneficial for justin. especially, he didn't start receiving therapy until he was four. so earlier intervention for him especially as an infant, i think really if i would have known what i know now i think he would be probably struggling a lot less. >> do you know native land, do you remember? >> home land. >> she expects autism therapies to continue to improve, to get more precise, like treatments for different cancers or infections but until then, she says she'll continue to guide parents with the tools she has. >> when parents ask me about what are the chances that my child, we can get rid of autism, i say you know this is what i want for your child