Invite her around, but tell her she has to bring her laptop & WT library or a CD to install it in your computer.
Make it clear that she is not welcome without them.
Do not get into a discussion on why.
If she shows up without them ..... tear a strip off her for not respecting your request and do not let her in the door.
Now that she is in the door, the only thing you want, is for her to write up a list of years of the Neo-Babylonian Empire, from Nebuchadnessar to Nabonidus, showing which king reigned in each year, using the lengths of reigns given in the WT library.
Hint. To get those lengths, all she has to do is search the Library for the names of the kings with words like 'years' and 'reigned'. She can find much of what she needs in one Watchtower. 1/1/1965.
Make it clear that you are not interested in anything else, and that her continuing to 'study' with you is dependant on her providing you with this list, either right now, or she can go home and do it.
Do not get into a discussion on why.
If she trys giving you a new WT to read saying it is 'all in here' and wants that to be an end of it ..... accept one, then tell her that she can use it to help her draw up her list.
Do not offer to help her, or do it yourself....... and you absolutely must not get sucked into any other subject, or get derailed, by any of the myriad of psychological warfare tricks she has prepared for for these occasions.
If you can't bring youself to do that ......
Threaten her with a restraining/harrasment/stalking order, or whatever you call it where you are.
