If I won the lottery then...

Tell her you won the lottery if you split it with her tell her she has to leave to get half and ask her if she would leave and if she says yes, then give her $1 and tell her to get out and find a new wife

Don't go to a Thai or Philippine dating site in the first place... 🙄

Winning the lotto is unlikely so no worries

Create a corporation before cashing it!!!!

Start spoiling her and hiding that money

Go the opposite way, tell her you're bankrupt, before you've finished the sentence, she'll be out the door and on a flight back home 🤔 or on the dating site

buy a gun, like duhhhhhhhhhhhhhh

If she wants to divorce, let her divorce, BUT, consult an attorney and let them know she's after the lottery money. In most states she's entitled to at least half if you're already married to her, a prenup means before marriage, so that's out of the question, you could get the "nicest judge", but even they have to go by the rules, the rest is just moot.