Stop in shock (Susan POV)

Susan stood there in her doorway, unable to move as she saw what her daughter was doing. Her baby girl was sitting on her bed, her eyes were closed for a split second, and her hand was down her pants, playing with herself. Her daughter's eyes opened a second after she opened the door and they just stared at each other for a moment.

Coming to her senses before her daughter, Susan quickly stepped in fully and shut the door behind her. "What are you doing!? Anybody could've come in and saw you, dear."

Rachel was quiet for a moment, as if she was ashamed for what she was doing. It made Susan hurt to see her like that. "I... I'm sorry, mom..."

Susan sighed softly, setting the plate down on her dresser. "It's alright, dear... I know you're going through some weird feelings right now... weird experiences... is it... is it hurting?"

Rachel pulled her hand out of her shorts and shook her head as she tried to sit up as if trying to cover herself more. "N-no... it's just... it's hard... and I don't know why..."

Susan sat next to her daughter, putting her hand on the girl's shoulder. "It's okay, baby... when... when boys hit puberty, they get... erections a-all the time..."

It was clear she wasn't exactly comfortable with this conversation. Then again, she didn't think she'd ever need to have it since she had all girls. But her daughter still nodded, as if following along.

"Boys who hit puberty recently... often get... erect... at the strangest times. Whether it be school... or the dinner table... I think you're g-going through the same thing, hon."

Rachel looked down at herself, making Susan glance down at well. She could still see the bulge. It made Susan wonder how big her daughter was. "But... how do I... get rid of it, mom? How do I stop it..?"

Susan blushed hard and locked eyes with her daughter quickly, already knowing the answer but not sure how to explain it. She shifted a little, clearing her throat. "W-well... when guys have it... they usually need... release..."

Susan was about to say more but she hesitated when she saw her daughter's concerned face. She realized words weren't helping her daughter very much. She needed help, right here and now. She needed physical reassurance. She needed her mother.

"Baby... if you'd like... I'm gonna do something that'll... h-help you..."

Rachel nodded slowly, making Susan feel guilty, like she was taking advantage of her baby. Of course her baby wouldn't know anything about this stuff. She was the youngest and still a virgin. It made Susan slightly more nervous. "O-okay, mom..."