Nice Ms. Woozl!
She's got it. Don't need House to diagnose that. She's hooked.
For a beginner those look great BTW. It is a lot harder than you think at first to make things. Give here a pat on the back.
Saggars as we use them today are mostly unglazed, but traditionally they used saggars for ALL firing because they didn't have shelves back in the day, they stacked saggars. Also they are useful for some glazes that are subject to contamination or need a particularly strong reduction like reds.
There is even an old job called a Saggar Maker's Bottom Tapper who was the boy apprentice that went around and tapped the bottoms of the drying saggers to see which ones were ready to be turned over to continue drying. This is back when they would make thousands of saggars at a time.
I always wanted to be a Saggar Maker's Bottom Tapper just so I could put it on a business card.