i think that u did the right thing! if the 4 year old goes to a therpist which is a great idea then by law it has to be reported to cps or they can lose there job and it the state of maryland they can do jail time. the oldest child should also get in to see a therpist. i wish them the best, and good luck to u!!
This is so hard, and complicated. Depending on how they approached the 4 year old who was playing with her genitals a lot - could influence her answer. Did they just simply say, if anyone has touched you in your privates, you know you can tell us don't you? Or, did they say why do you keep playing with your private parts, who has shown you how to do that? Do you see how different these two questions are - one would encourage a child to make up any thing, the other would probably get closer to the truth?
Also, children who have been molested sometimes correctly describe the incident but falsely name the perpetrator.
Best wishes. Yes, the teenager certainly stands to lose in a really big way if this is false. On the other hand, you don't want to ignore a plea for help from the smaller child.