Because in true Nami style she's a jerk (a pragmatic jerk but still a jerk) at the outset, so:
1) Hell no. That guy is a jerk, I'm not letting our beautiful house that Franky built get destroyed because that we're protecting someone that doesn't deserve it;
2) Someone that we're probably going to lose anyway, JSYK, because think of kidnapping droids etcetera, if they come prepared to take Bil away from the whole town they're going to come loaded for bear;
3) LUFFY THIS IS A BAD IDEA WHY ARE YOU SAYING YES LET'S DO IT INSERT NAMI BUT LUFFY >E SPEECH HERE
4) But seriously, once Luffy says yes she'll be very begrudgingly okay with it. Very. Begrudgingly. She just had to, y'know, be heard.
5) Oh, Chopper makes noise about doing this no matter what and going elsewhere if we don't agree? Fuck that, you're nakama. B| Bil can stay right well here where we can keep an eye on you. I mean him.
6) Fuck the Malnosso, she's now all for this.
7) Also if Bil has no barcode or any way to track him, then she will also point out that in a pinch, she can hide him elsewhere with the help of Mirage Tempo and the droids won't be able to find him. So basically as an offer of "if they do come to the house we can relocate Bil again verrrry quietly", as it were.
That is, she's reached the stage of full acceptance and throwing in ideas at this point |Db
Nami's many stages of denial and acceptance
1) Hell no. That guy is a jerk, I'm not letting our beautiful house that Franky built get destroyed because that we're protecting someone that doesn't deserve it;
2) Someone that we're probably going to lose anyway, JSYK, because think of kidnapping droids etcetera, if they come prepared to take Bil away from the whole town they're going to come loaded for bear;
3) LUFFY THIS IS A BAD IDEA WHY ARE YOU SAYING YES LET'S DO IT INSERT NAMI BUT LUFFY >E SPEECH HERE
4) But seriously, once Luffy says yes she'll be very begrudgingly okay with it. Very. Begrudgingly. She just had to, y'know, be heard.
5) Oh, Chopper makes noise about doing this no matter what and going elsewhere if we don't agree? Fuck that, you're nakama. B| Bil can stay right well here where we can keep an eye on you. I mean him.
6) Fuck the Malnosso, she's now all for this.
7) Also if Bil has no barcode or any way to track him, then she will also point out that in a pinch, she can hide him elsewhere with the help of Mirage Tempo and the droids won't be able to find him. So basically as an offer of "if they do come to the house we can relocate Bil again verrrry quietly", as it were.
That is, she's reached the stage of full acceptance and throwing in ideas at this point |Db