What did she mean by this?

>>144724809
that she wants to give him private lessons , but she is too tsundere to explicitly say it

>>144724809
you understand nothing at all

>>144724809
Id like to know as well i suppose

>>144724809
And you don't seem to understand.

>>144724809
you know nothing, jon snow

It means he should help beetlejuice kill Emilia next timeline.

>>144724809
Subaru literally doesn't understand Beatrice's feelings and predicament. Let's just say even though she doesn't know about the curse, she knows that Subaru has died several times. So, put two and two together and figure it out.

It means stick to one thread.

Why does she keep jobbing, she knows what's coming even without Subaru and she even states her job is to protect the mansion not just the library.