Of course this could never actually happen, since Pear passed away decades before Athena was even born. But if they ever did meet, I think Buttercup would've loved how much her granddaughter looked like her (before Athena's purple mane grew in). They have very similar coat colors, markings, and manes. Pear Butter also has a slight gradient in her hair, which is where Athena gets hers from.