I've had a couple of coworkers with kid/grandkids in the business. One of them had a daughter who worked in the Chicago area, so I know that they do have a fair amount of work. Your DD is adorable and would probably do well. The other lady has grandchildren who live in the LA area. Their mother is their agent, and they all do very well with acting and modeling. The kids are great kids, extremely bright and articulate, very well rounded, etc. I've met them all while they were out visiting.
If the only exposure I had was the showbiz moms and dads show, I'd say "No way would I want my sweet baby exposed to that!" but I know that in real life, modeling and acting can be a wonderful way for a child to save a fair nest egg which could be used in the future.
Good luck!