"....It's just a phone ring."
Black who calmed down after the shock, felt the phone in her pocket vibrate and realized that it was a sound coming from her phone, not some ghost as she thought.
"No one saw that right?"
She quickly looked felt and right trying to see if anyone saw her embarrassment, After all had created a certain stoic persona around people. She didn't want to ruin it.
As not only this persona keep her and her twin out of trouble but also make sure others would be wary of her thinking she has some deep thinker and not mess with her.
Though it is just a facade, Which can fall apart if someone really tries to test it but thankfully it is working out of her till now and she hopes it will stay this way.
"Phew, No one saw it, Wait who changed my ringtone to this?"
Black sighed in relief after confirming no one saw it, Which was not a surprise.