People with Down Syndrome do share some common features. However, most will resemble their own family more than they resemble each other.
Looking at photos of Ada around Frida’s age (3 months!), they are really similar. She also looks like me. She looks like our grandads when she’s in full cheek mode which can be pretty hilarious and disconcerting in equal measure.
It’s very rare that I think about Frida having Down Syndrome when I look at her as she just looks like her - beautiful, cheeky, smiley and most frequently with a boob attached.
Frida is Frida.