I don't think she's that type of girl though ...she tagged along because she knows that if she stick with him she has a high chance of survival not to mention lots of expensive materials she can sell to pay for her mother's hospital bills if ever they conquer the dungeon. I'm fine with her tbh.. trust me I developed an eye for decent females who aren't a bother to MC's
You know, I think this girl is a trap - I don't believe it's coincidence that in front of the gate MC was spied upon by demon (Baal) and now a girl looking just like his sister AND having same problems as him were tied to a tree shouting for help (〜 ̄△ ̄)〜 So, no, I hope she is an enemy and powerful one (๑•ㅂ•)و✧
There is always a girl that would be a bother to our mc...
In action manga whenever a girl is saved by our mc she would be: curious then follow, develop feelings, annoyingly begs to help him even tho she is weak, being a burden/nuisance and more