I thought she was hot as ****. I'd love to have a petite little French girlfriend like that. She was nude in Henry & June. Fap fap fap.

Butch forgets the watch himself and has to go pick it up.
It might've been hard to buy that Butch forgets the watch himself given how important it clearly was to him.

I'd say not so much annoying but unnecessary. As has already been stated, it would've been possible to omit her character entirely. It wouldn't have made any difference to the plot. Butch forgets the watch himself and has to go pick it up. The story would've played-out pretty much the same way. Because her character is unnecessary, the scene at the motel feels dragged out. I personally felt she was rather annoying because she isn't really my type. Her constant pouting and mannerisms were off putting rather than cute.

Explain why she was annoying? Some people don't like her accent or just her pouting character.
Seize the moment, 'cause tomorrow you might be dead.