How to handle characters that are so cute and pure and wholesome that you’d stalk and murder them in real life?

I have a character who is like the most innocent and sweet person in the world. They’re a little kid and they’re sad because they lost their mother and everyone hates them. They’re so sad and they never stop crying and they can’t sleep at night because they’re so scared and they need someone to love them. I don’t know what to do with them. I’m tempted to kidnap them and lock them in a basement but I know that’s wrong so I won’t do it. But sometimes I fantasize about doing it. What should I do?<br><br>PS: I have been diagnosed with borderline personality disorder and sometimes it makes it hard for me to control my emotions and I get out of control.