You have received good advice already, but I just wanted to chime in with some support here.

What your wife is doing is wrong. Gambling is already emotional enough as it is, and adding spousal pressure is just nasty. I understand she isn't probably trying to be nasty, she is more likely unaware of the pressures you already face just playing the game.

I would keep everything separate, not just the BR, and buy the extras as I wanted and the profits allowed. I would also make the distinction crystal clear to this lady. To be fair, your playing is time spent outside of the relationship, or late for dinner, or what have you, so you also have a responsibility to share the winnings in some degree. That is different from having her run rampant over your bank account.

Just my 2 cents (I'm female if it matters--probably not as I'm an earning female).