Here’s a quick little mockup of the deal just being a straightforward ‘the boy and his mother’.

There’re a couple of alternate ways you could cut that, but that’s a simple one. Music transition at the cut seems fine too.

One other idea I had, if you still want a little Qui-Gon manipulation, would be to add in the shot of Qui-Gon waving his hand (originally to manipulate the dice) as he’s saying ‘the boy and his mother’, or just after it. There you’d be implying that he’s using a mind trick to get Watto to accept.* There’s maybe a conflict there with him failing to mind trick Watto earlier. However, you could read that as Watto rejecting the first attempt because he STRONGLY wants spendable money, whereas the second attempt succeeds because Watto’s mentally WEAK to gambling, something that Qui-Gon’s now realised he can exploit. That’d also give Qui-Gon a little arc (fail > succeed) but also be a little manipulative for a Jedi - perhaps emphasising his less dogmatic side as he does something a little wrong to achieve a greater right.

*You could also split the scene of Jar Jar looking left and right around that shot, to emphasise it. He looks from Watto to Qui-Gon, we see Qui-Gon’s hand wave, he looks back from Qui-Gon to Watto as we see Watto accept. Might help tie it together.