What makes more sense, grammar-wise?
Mama admires the butter churn; the “sinks” in its “beautiful light yellow wood from … where Big Dee and Stash had lived” testify to its well-loved use.
Mama admires the dasher; the “sinks” in its “beautiful light yellow wood from … where Big Dee and Stash had lived” testify to its frequent and fond use.
Or do they both not make sense?
(For context, Mama's talking about how there's all these sinks in the wood because people would push their hands into it and such. The dasher has been used a ton over the last few generations in their family, it's almost an heirloom of sorts)