Just watched the show, and it was great.
So here's how I explain it:
1. It's a Binary Hero system. The 2 main characters cover eachother, but for the most part its more like she's a badass and in order to keep going she needs a lifeforce recharge from her "Contracted Monk" to keep her from going berserk.
2. There's very few situations where she actually needs to be rescued because of uselessness, they're usually caused by moral implications.
3. Yes you'll enjoy the show. She's a very strong female lead, she's driven by a purpose and even the English dub is pretty good.
