White's Tree Frog Sick?

[schwabem]

I'm having some trouble with my white's tree frog(s). Here's the background:

We got our first frog in Nov 2011 from PetSmart for our daughter's birthday. Technically "Slimy the Wonder Frog" was my daughter's pet but since she was just turning 6 my husband and I were the primary care takers and we watched how she cared for him and how often she could hold him (no more than once a week). For her 7th birthday (Nov 2012) she asked if she could have a second frog. Since we have the 18x18x24 ExoTerra tank we figured two frogs in it would be fine. Thus "Peek the Good Hiding Frog" came into our home from a local mom-n-pop pet store.

Things seemed to be going pretty well until a month ago. I noticed that Slimy's eyes (pupils) were not opening equally. One would be open all the way while the other was closed down all the way. Some times they'd be equal, other times they wouldn't. Two weeks ago when we got up to get everyone ready for school we saw Slimy laying in the bottom of the tank very dead. I was surprised because the night before he was very active and was hunting crickets all over the terrarium. We took him out right away and buried him in the back yard near our other friends who've crossed the Rainbow Bridge.

Now Peek seems to be off. Her eyes are equally dilated, but I haven't noticed them opening up for a few days, even in the evenings when she's hunting they're closed down tight. I've taken her out of the tank and into a large tupperware box for the time being. I don't know if the problem was in the tank or not, but I took it outside and have totally cleared out the plants, dumped the substrate, scrubbed the log, and have washed the whole thing out. I'm going today to get some fresh substrate in case there was something growing in there that was making them sick.

I noticed that Peek has some little blue marks on her nose that I haven't noticed before. They look like scratches? Also there's a darker line in the middle of her eyes, like she's trying to open them but they're just stuck closed.

Is there anything I should do other than resetting the tank?

Do they need calcium/vitamin supplements? I've heard mixed things so have just been feeding gut loaded crickets with no additional supplements.
Do they need a UV light bulb? Again, some places say that frogs need them while others say that the White's are fine with a regular CFL bulb (which is what I have).

I know that life and death happens but if Peek dies too, especially this close to the demise of Slimy, I'm going to have a very devastated frog loving 7 year old on my hands and I'd like to avoid that if at all possible.


Here's Peek as of this morning, blue scratches(?) on her snout and eyes that look like they want to open but aren't.