can't understand how で particle works with ～ばいいのに


I am having trouble interpreting this sentence in a manga, the text was split
in two bubbles which is why I separated them. 「日之出ん家でしてくればいいのに」
「そうすりゃもっと長く一緒に居られる」

from other threads, ～ばいいのに seems to imply wishing something happens or "should
do (but haven't done)". which leads me to think it means something like: "I
wish you would give me X, (it would be good) because Y" "I wish you would give
me hinode's address, (it would be good because) you would be able to stay
together longer".

However, the で particle usually means "at" (at a place/home/...) or "with"
(with a tool/with scissors/etc). I have no idea what it is doing here.

here is the screenshot in case it matters: [![enter image description
here](https://i.stack.imgur.com/CG1Ko.jpg)](https://i.stack.imgur.com/CG1Ko.jpg)

context: weird cat (seemingly evil/bad/....) on the right talking to the cat
girl on the left




As you said, this で is "at" (at a place). 日之出ん家で means "at Hinode's house".
～ばいいのに has the other meaning, which is a suggestion such as "why don't you ～".
This する in the manga means "take a poop". So it means "Why don't you take a
poop at (the bathroom of) Hinode's house?"




As you said, this で is "at" (at a place). 日之出ん家で means "at Hinode's house".
～ばいいのに has the other meaning, which is a suggestion such as "why don't you ～".
This する in the manga means "take a poop". So it means "Why don't you take a
poop at (the bathroom of) Hinode's house?"

