If you're not doing end-game rags, then no you don't have to worry about her. As I said, for most solo content, she's generally never needed.

As for rags, your extra million damage or two really means nothing in the grand scheme of things, when the rags have well over a 100 million hp. If you actually wanted to help in those without looking to leech, then things like andro heals and joan def cuts are party-wide and thus help others more than an extra 1-2m dmg in that context. Especially if you're paying attention and time those around triggers and such. ¯\_(ツ)_/¯