I just received confirmation that the seedling I have called "Big Pink" is now registered with the name I wanted: Bubblegum Queen.
(Zimmerman 2023) Deep rose to bubblegum pink petals with lighter watermark and white edge. The first blooms are 8 inches on 32 inch scapes. Later in the season and on rebloom, the flowers are 7+ inches. A semi-evergreen tet, this Early cultivar is a vigorous multiplier and a reliable rebloomer. Bubblegum Queen has an average of 18 buds, with a range of 14-21 buds, and three-way branching. It is a reluctant pod setter, but the pollen is extremely potent and almost always sets a pod. I have lots of exciting seedlings coming from this parent. (Dancing Flamingo X Bubblegum Delicious)
Bubblegum Queen looks like this when it first blooms and temps are cooler.
This photo of more representative of what the bloom looks most of the summer and on rebloom.
Here's a clump shot from last summer during a long stretch of temps around 100 degrees.