I don't understand the concept of "a break." For me it's really simple; either I love/really like someone and need them in my life, or I don't anymore and I want to get rid of them.

Since she said essentially that me as a person (my depression is a thing that's shaping my identity as strongly as any character traits, I had no say in this matter) is being hurtful for her, I believe this to be the latter, just sugarcoated in conventional niceties.