Just a little scenario...I don't tolerate depression of that's what your thinking...

1- You notice Harley has been acting a little strange, she rarely talks to you or anyone else, surprisingly not even Toriel. She has dark bags under her eyes and her eyes are red and puffy whenever you see her, and something red stains her sleeves. When you ask her what it is, she says it's paint, or says she tripped and scratched her arm. But, today you walked into her room, and you see her with a blade...and holding her arm....cutting.....

2- Above vice versa

3- Scenario one but with Allissa

4- Scenario one but with you and your crush.