I think we have discussed this before and thank you for bringing this here for discussion.

Charlotte might have a foresight for things around her, or at least JA, occasionally tries to tell us so from what Charlotte says or advises Lizzy, she wants to tell us that Charlotte not an ordinary friend, she is clever enough to know what is suitable for her and the people around her ,May be one can say thoughtful, she thinks of her family and do what she thinks is right as JA says about her marrying Collins:-

"The whole family, in short, were properly overjoyed on the occasion. The younger girls formed hopes of coming out a year or two sooner than they might otherwise have done; and the boys were relieved from their apprehension of Charlotte's dying an old maid. Charlotte herself was tolerably composed. She had gained her point, and had time to consider of it. Her reflections were in general satisfactory. Mr. Collins, to be sure, was neither sensible nor agreeable; his society was irksome, and his attachment to her must be imaginary. But still he would be her husband. Without thinking highly either of men or of matrimony, marriage had always been her object; it was the only honourable provision for well-educated young women of small fortune, and however uncertain of giving happiness, must be their pleasantest preservative from want. This preservative she had now obtained; and at the age of twenty-seven, without having ever been handsome, she felt all the good luck of it."