As promised, I have checked the pool again.
Chlorine: 1
pH: 7.5

My understanding is that these are both in the acceptable range. I will refrain from using any more of trichlor shock.

Clarification question for PoolDoc: Are you suggesting that I need to drain and restart now or only if I decided to use bromine instead of chlorine?

Looking at those pictures, there are some differences between them and what my daughter had. The bumps were smaller, there were a lot more of them, and they were much more densely packed together. So I'm not sure what to think.

BigDave: Yes the alkalinity in my fill water was pretty close to that in the pool. And it is the same water she bathes in.

Unless PoolDoc tells me I need to drain and refill, my next move seems to be adding a few chlorine tabs to keep the chlorine from dropping any further and tackling the alkalinity issue based on the information aylad posted. Or should I just start using bleach as outlined in PoolDoc's Recipe?

Thanks again for all the help.