Edit: and of course they made their post while I was doing mine 
OK, so since @Dathmach hasn’t done their translations as yet, I’m going to have a go at it myself this week! Also I started looking up onomatopoeia that i usually don’t bother with, but i couldn’t figure out how on earth sitting up could make the sound むく. But honestly even after looking it up i’m still confused, haha. According to https://ono.jepang.org/ it means:
‘Muku to (or mukutto) captures the sudden, physical motion of rising up, most commonly when springing up from bed after waking. It implies going from a flat or lowered position to an upright one in an abrupt or slightly surprising manner.’
As a native English speaker, I had never heard the word ‘mimetic’ before, so then I had to look that up:
A mimetic word is a word that imitates a sensory image, a physical movement, a condition, or a feeling rather than a sound.
OK. So not really onomatopoeia.
Anyway, where was I? Oh yeah, よつばと!
Page 89
Global Warming.
SIde note: This got me wondering how long ago this was actually published. 2003 apparently! damn, older than I thought!
Side note 2: Literally just yesterday I got a message from my italki tutor with a story from a kids book she wants me to try reading, I think because she knows I have a degree in astronomy, and the story is about why the moon and the sun look the same size to us. Anyway, just mentioning it because I learned the word ちきゅう in that just yesterday, so nice coincidence that it pops up (in kanji form) here the very next day.
Anyway, ADHD, can we get back to reading the Manga now please? Great, thanks!
Page 90
eh?
Page 91
Dad!!
What? Woken up huh?
look!
Fuuka drew a picture of me!
(not 100% sure on this bit but I think it’s something like) She left it here for when I woke up.
wow that’s good. She’s a nice girl.
It’s a nice surprise and she’s a good person? Not sure about this again.
Page 92
This picture is also bad but well done. (this doesn’t really make much sense to me)
I’m pleased with it? (I guess a better translation would be I liked it?)
You need to say thankyou to her
Yes, I do!
I’ll go and thank her.
Page 93
Oh
That’s the switch that makes people come out!
push
bing-bong
bing-bong
bing-bong
bing-bong
bing-bong (oh good grief よつば!)
hahaha!
fuukaaa!
COME OUT!
Page 94
ALRIGHT!!
who’s that?
That’s supposed to be my line
Page 95
what’s up?
ah. よつば
OH. The pretty older sister
It’s Asagi, Asagi.
Asage! (Breakfast, apparently)
Asagi
What are you doing today? What do you want?
I need to have a word with Fuuka
That again? interesting.
But Fuuka is out at the moment
Page 96
huh?
So what should I do?
You’re a funny kid
Anyway, do you want to come in? Because it’s hot out here.
Seems to be something like ‘sit wherever you want’
eh??
Page 97
This room is cold (a cold object)!!
Has the cooler made it too cold for you?
Is it winter here?
Does this feel cold to you? Is yotsuba sensitive to the cold?
co…not cold. umm… precisely! cold! - I’m guessing this is her realising that she used the wrong type of word before when she said つめたい
could it be…?
Page 98
Do you know about aircon?
This machine.
What is that?!?
here
OOh! Cold wind is coming out!
What is this?!?!
Cooler…cooler. (aircon)
It’s a machine that makes it cooler in summer.
Ooh! Amazing!
Does it make ice cream?
No, that’s not possible.
Page 99
So
What do you want to talk to fuuka about?
I want to thank her.
thank her?
Look, she drew a picture of me!
ooh!
Page 100
That kid is not skilled (at drawing)
Yes
However it’s right to thank her
That’s admirable
But if Ena is good at it (Not really sure about this, doesn’t seem to make total sense)
Ena?
Let’s see shall we? There’s me, fuuka and one more person
oh, the small one
Now, go upstairs and play with her.
So a few tricky parts, bits I’m not 100% sure of, but it was no problem to get the gist of the story, but plenty of words needed to be looked up in the vocab sheet. Again though, the grammar is mostly fine, I think.
Yotsuba is still funny.