So really Louella just got me to think about the dynamics of taking tesserae in a large family. Iirc I believe the only confirmed examples we've seen in the series of kids taking tesserae are Gale and Haymitch (both only have siblings too young to reap), Rory (only has siblings too old or too young to reap), and Katniss (who does eventually have one much younger sibling in the reaping, but chooses to be the sole tesserae taler because she is very maternal and protective towards prim and their family can get by with one tesserae each). We've never seen an example of more than one sibling simultaneously taking tesserae, but we know it's possible based on what Katniss says about "not allowing" Prim to take it.
Louella has a "half dozen siblings," meaning (if that's taken literally) 9 family members total. If she took tesserae for 9 people for 2 years, then at 13 she'd have 20 slips, the same as Haymitch.
However, 3 McCoy kids are confirmed to be reaping age in SOTR. Taking out 9 tesserae a year for 7 years would massively increase any one kid's chances, so in large families do you think it's common to split up the tesserae, perhaps with in this example each kid taking it for 3 family members? Or, maybe the oldest kid of reaping age at any given time is just the one to draw tesserae for everyone because the amounts accumulate, so it's better to draw when you're older and have the slips stick to you for less years (and possibly also put of a desire to protect their younger siblings like Katniss).
Of course, some families might be desperate enough that they do need to have multiple kids drawing tesserae for all the family members at the same time, and this especially might be true for large families. Typically in poor societies more children means more mouths to feed, so kids work to offset this. However, in district 12 kids aren't allowed to work in the mines at all, which, horribly enough, means the only "work" kids can do to help feed themselves is... enter their name in the death drawing. A pretty devious way for the capital to twist the knife further, and might honestly be the reason why the capital chooses not to let kids work in the mines, even though irl there's lots of mining tasks can be performed by children easier than adults due to their size.
So what do you guys think?