Hello Mya and welcome to the site.

This is a very personal and - because of that - difficult poem to comment on. The subject of cutting and people being that life-beaten is always a sensitive one to approach.
It is very difficult to watch anyone in ay sort of physical or mental pain, especially if there appears to be nothing we can do to help. Sticking by them, convincing them of our love for them and making them believe their is something worthwhile to live for is a good start, though.

All the very best and take care,
Ben