I wasn't paying too much attention, but on page 15, the text bubble at the top just got my attention for some reason.
It should be "To think you would actually offer to help" rather than would actually offered to help.
And in page 21, you had a text bubble end with a ",." Minor typoes like this accumulates over time. Just a few things to note for future Quality Assurance if you guys care for it.
So... Are they going to reveal that they're not blood related siblings, or are we just going full sweet home alabama? Or the biggest possible twist of all. There will be no incest.