I'm guessing she'll have about $2,000 after she's done.
One idea is to have her put her money in a CD and my wife and I would contribute the extra so that she is getting a rate of return where it feels like she is accomplishing something.
You have a serious teachable moment here.
First, as another poster has suggested, declare her earned income on her own tax return. The more earned income she declares, the more you can put into her Roth IRA. Since she probably won't pay any taxes on anything up to $5500, you should take every opportunity to declare every bit of earned income that you can possibly (in good conscience) consider for her. I'd add in any allowance money as well as cash earned for chores & home jobs. Consider paying her for managing the household finances or running errands or washing cars.
Second, start her Roth IRA. You'll have to be the subcustodian to a minor (probably to the age of 18), and the only place we found to do that in 2006 was T. Rowe Price. Fidelity was adamant in their refusal, but you might find other places with cheaper expense ratios.
Third, give her a profit motive. Tell her that you'll hand over some of her inheritance now (instead of when she's 82 years old) to make sure that she can put just as many dollars into her Roth IRA as she has earned income. Her side of the deal would be to contribute an obscenely high savings rate of her own-- something like 60%-80%. You could tell her that if she holds up her end of the deal then you'll gift her another $1000 to put into a CD ladder. The compounding benefits of a Roth IRA at this age are too big to waste, and that's the phrase we used with our daughter when she started working (age 14).
Manage her material expectations (good luck). For example, she'll probably want a cell phone with data. Figure out how she can spend 5%-10% of her earnings to buy a low-end phone with low-end data, and then the rest is her funding problem. Explain to her that she'd better think about long-term savings for her first car, and you're happy to help her with the CD ladder. This might also be a good time to start a "teen clothing & toiletries allowance" where you guys stop buying her clothes and give her the money to do that. You could start it with monthly or quarterly increments and work up to semi-annual & annual increments. The idea is to reduce her temptation to go on a spending spree at the mall with her babysitting earnings, while also giving her the chance to handle appropriately larger sums of money. We used to tell our daughter that she could look really good or smell really good, and the choices were up to her. (For the other forum members, I'm not sure how well this would work with a teen boy.) The idea is to give her the feeling that she's managing her money and not just turning it over to you to disappear until she graduates from high school-- which is nearly half of her life away.
If you haven't already read David Owen's "First National Bank of Dad", now is the time.