first grow, first problem

Hello everyone,
This is the first time I've posted on this forum. I've browsed and done a few searches and planned on introducing myself in the proper thread when I had time, but I ran into a problem this morning so my first post relates to that.
Ok, this is my first grow and everything was going just great until today. My babies are inside, in soil, and I began flowering them a little under a week ago. Out of 6, there are 3 definite females and the other three are probably males but I'm giving them another day or two just to make sure.
One of the girls, my favorite one, went limp this morning right after I watered and I think I know where I screwed up. I put a gallon of water in a 2gallon bucket and mixed in just a tiny bit (a teaspoon at the most) of bat guano. Stirred it real good, let it sit for a little while, strained it, and gave some to the girls. Within 15 minutes, the leaves on one of them began to droop. I checked the ph of the soil and it looks like about 6.5, which, according to my cheap little tester, is "slightly acidic."
Is this what caused her leaves to droop all of a sudden?
How should I correct the problem?
Did I post this in the wrong forum?

Sorry for the long post. I try to be thorough. I would take a picture but I'm already late for work so I gotta split. I'll check back in about an hour.
Thanks for the advice.

Sounds like a lot of water to me. gal vs 2 gal container. Cannabis hates to over watered. How old are they? I've found that males always sex first, meaning when you see flower pods, males, and a plant or 2 have yet to show flower pods, odds are they will be females and it will take a few more days to confirm that. Males first, females a few days later, like clockwork for me.

Anyone else notice this pattern?

Give pot a chance.

Thanks for the responses.
I didn't give the plants all that water. That's just how much I mixed with the little bit of bat guano.
So far I think I've been good about not over watering. The plant looked great before I watered it this morning and 10-15 minutes later it got the droops. It all happened pretty fast.
I'm going to go take a look and see how it looks now. I'll snap a picture while I'm in there and then see if I can figure out how to post it.
As far as the male/female thing goes, my females showed themselves before the males did. None have seed pods yet, but three of them have those pretty little white hairs. I'll bet a lot of you remember your first attempt and how you felt about your first female plants. I had that this morning, with coffee.

Thanks again.

Why not pick up an inexpensive plant moisture meter?

I hope your girls are ok -

Well, they're sleeping right now so I don't want to wake them up to take a picture. I did take a peek though and the one I was worried about had perked back up, the others are fine as well.
I'm assuming it's not a good idea to disturb their sleep schedule. Is this true, or is it not that big a deal?

I'm pretty sure I haven't been over watering, in general, but I might have over dosed her today.
Does a plant usually react like that (the sudden droop) when over watered just one time?