Don't listen to these retards who literally never leave their basement. She will thank you for your time and leave. Nothing else will come of it, and hyping up expectations from every tiny conversation is pointless as an incel, not to mention reeks of entitlement if all she wants is help. Fems use guys for far greater than help at the library without the promise of sex. I don't think telling her to fuck off was necessary but pretty understandable.
Fems will strike up an actual conversation that can lead somewhere if they're interested in talking. Asking for help is NOT one of these conversations, your average cunt in 2018 sees sub8 men as her personal 24/7 help desk/stepladder.