how come you avoided the girl's name entirely?

002
OG: だって〜…陽ちゃんの家テレビもないし
TL: "But there is no TV in my home"
ED: she's talking about his home

OG: 原宿でスカウトされてアイドルになるって最初の日言ってたじゃん
TL: "Didn't I tell you that if you hang out at Harajuku some talent agency will totally scout you to become an idol?"
ED: that's what she told him not the other way around

OG: 静かで広くて空気がキレイで都会でナウくて
TL: "Can't you bring me to somewhere spacious, quiet, and full of fresh air?"
ED: missing last part of line

OG: 田舎っぽい女子でも浮かないし楽しい所連れてって！
TL: "Someplace that even countryside girls would be envious?"
ED: she's not asking to go somewhere that would make a country girl envious, she wants to let loose

004
OG: 明日帰ったら大急ぎで仕事しなきゃ…
TL: "Once she leaves tomorrow, I'll quickly finish my work."
ED: he's talking about how quickly he needs to work

005
OG: けど瞳はこれでよかったのかなあ…
TL: "Is this really okay...?"
ED: he's wondering about her side of things

006
OG: そりゃあ…すっかり大人になってるし…
TL: "Also, I am a man..."
ED: he's talking about her

007
OG: …うれしはずかし
TL: "That makes me happy..."
ED: missing second half of line

OG: ずっと一緒にいるのにそういう雰囲気になんないんだもん…
TL: N/A
ED: the bubbles in this panel are rearranged but the second half of this line gets dropped

011
OG: ソッとするから大丈夫
TL: "Yes, don't worry"
ED: he gives her a reason not to worry

etc

Base +38, bigscuba +8, SkullDraecos +6, stelok -10, Aelth +7, Tizatln +9, SvTW +11, Mastemo +9, as102 +13, Evyy +20, hobohobo +36, incogna777 +10, VITA135 -3, and 3 more...

I might be wrong but I think the niece's name is Hitomi. (瞳).

Base +2, incogna777 +10, stelok +10

Holy shit, this comic is so sweet it gave me a cavity!

Base +6, SvTW +11, stelok +10, UWin +11