Panic in tripletsville

So... one of my daughters is on the phone with a girl in her class. The girl tells DD that there is a 5 yr old girl at her house who was annoying her, so she gave her some of her grandmother's medicine to put her to sleep, and now the girl is sleeping, and when her parents come to pick her up she was planning on telling them how good she was because she slept the whole time.

Okaaaaaaaaaaaaay... so now what would you do when your daughter confides this to you?

Well... what I did was:
#1 panic that there is a 5 yr old overdosing on meds somewhere in my town.
#2 remember just who this girl is who told DD this (she lies a lot)
#3 remember that this girl's grandmother (girl lives with her) and I do NOT get along and will probably NOT want to listen to anything I have to say, and probably attack me verbally tomorrow in the school parking lot IF this is not true
#4 not give two darns about numbers 2 and 3 because, hey, there might be a 5 yr old girl overdosing at her house!
#5 have DD call the girl back and ask her if she really did give a little girl medicine or was she only kidding (with the plan of "if the girl DID give the 5 yr old medicine, put me on the phone")

Now... the girl's answering machine picks up and DD leaves a message to call her back ASAP

So, then I spent the next 20 minutes working up to one of the worst panic attacks in my life history (which is quite an accomplishment!) thinking there is a 5 yr old girl ODing and I'm the only one who knows it and I don't even know where these people live and cannot get in touch with them.

Next... DD's other friend calls her (yeah, DD2 is very chatty lately)... about 10 minutes into the call I realize she is talking to a girl (girl2) who lives a couple of houses away from "the girl who told DD about giving the meds" (girl1)... so I ask to talk to her mom and explained I'm not trying to cause any problems but I'm not sure what to do at this point because I cannot get through to girl1's phone number, and explain what DD told me. Girl2's mom knows a different number and calls that and finds out there was no 5 yr old girl at the house today and it was a joke (and she even said to me "I'm on good terms with [the grandmother], so I will call her" so it is obvious the grandmother has said some bad things about me to her).

Thank G-d!

But now I'm all in a panic (yeah I took Xanax) about girl1's grandmother freaking out on me tomorrow in the school parking lot.

Believe me, this woman (the grandmother) is relentless and if the last 2 times this happened to me had happened to someone else, it is enough to give ANYONE panic disorder, let alone someone who already has it!

I really wish today was Friday so she had a weekend to calm down and re-think attacking me tomorrow... but it is not Friday. Ugh.

I sure hope that Xanax kicks in soon!

I know I did the right thing, but now I feel really stupid for exposing myself to this imminent attack. At least I think I know I did the right thing, but that confidence is fading rapidly!