(Not a stalker 🙃). I found eunha's sister comment on her friend's post about eunha and gfriend comeback.
I'm not good in korean language but I think Eunha's sister commented that she felt ❤ to her for promoting her sister a.k.a eunha's cb. 😆. Then the girl who posted it reply, she said : your mom is my mom, your sister is my sister ❤. This is 😍❤💕 *sorry, I blurred their username. 😅