Y/n was a half vampire so she couldn't die by the sun if she was out in the sunlight with a laugh she walked to Alter's room hearing him read to Frisk she smiled softly and walked off to drink some water because she didn't want Alter to know she was half vampire just yet but when she saw Frisk she couldn't hold it back as she bit their shoulder they screamed in pain which alerted Alter making him dash into the room Y/n's eyes widened in fear as Alter growled and grabbed her. Alter sighed  and hugged Y/n making tears stream down her cheeks as she sobbed "Pl-Please don't hate me!" Y/n said hugging back and sobbing into Alter's neck Alter hugged her tighter "I don't hate you, I was just alerted when the kid screamed" Y/n looked up at Alter and kissed his skull and then teeth blushing. Alter kissed back and put her on his lap cuddling her in his arms he pulled out a bottle of blood and handed it to Y/n making her take it and take a few sips of it before putting it on the table and snuggling against Alter.