I was trying to figure out why your CYA result was so much higher than your last test so I re-scanned this thread. I missed it before where you said you were going to continue using all of your 4 lb.container of CYA. You don't want to do that. It will make your CYA level too high. Don't add any more. Your CYA is already a little high. To compensate for it, you'll need to keep your chlorine between 5-10 ALL the time. (If you haven't already done so, please read the Best Guess Chlorine Chart in my signature below.)

Do NOT let your daughter add that algaecide. It will most likely cause your pool to become a foamy mess. That is a pretty common side effect of a lot of the algaecides. The best algaecide is just to maintain proper chlorine levels.