look at it this way.
You're making $10, and want an extra $5.
That's a 50% raise!
If you got an extra dollar, that would be a 10% raise.
That would still be a lot to ask for, if you were on a job, but might be doable if your employer (dad) saw you were really good at what you do (being Gracie) and showed potential.
Look at is like a promotion, having a different job.
If you got a promotion at work, you could get a BIG increase, like 20% ($2) or even 50% ($5), but you'd have to show them you were able to do something worth that increase, not taking on another little chore, but something bigger.
and what about your sister? Do you think she's going to sit still while you get another $5, and she doesn't?
Maybe the 2 of you can team together, to do something one of you can't alone!
Then, you could split whatever increase you could earn.
On top of that, if you could figure out a way to save your dad money somewhere else, and were doing a good job, you could use that as leverage.
Let me tell you what leverage is. You're a smart girl gracie, so stay with me.
Here's an example. You know that knob on the toilet you use to flush? That's a lever. You just give it a little push, and look at all the stuff that happens! One little effort on your part, and gallons of water swirl around, wisking away you know what. Can you imagine all the effort you'd have to use if you had to carry all that water, and do all that work the toilet does?
A little effort, a big result. That's leverage.
If you would like $5 extra a week, figure out some way to save your dad $10 a week.
If you make a deal that he'll give you half of that savings, you get $5, and he's happy because HE has an extra $5.
Even more importantly, he's happy because you're showing him you're thinking.
You say you wipe down the counters, etc. You use paper towels? Tell dad to stop buying them, and you'll use old rags. Spray down the counters with vinegar and water instead of expensive cleaning sprays. Vinegar and water cleans just about anything.
Maybe cut down on soda, making yourself ice tea out of tea bags (maybe flavored tea bags) instead?
I'll bet if you look around, you could see things that without giving up too much, or just changing how you do something, could save him $10 a week.
Who washes the car? Maybe you and you sister now?