When my kids were younger, I started seedling in the house with a mini green house (they have them at the home garden centers) or use an old "paper" egg carton to start. You will need compost or peat moss to start (I do not use dirt.) Make sure they are watered, covered, an in full sun until they start to sprout, then partial sun. Last frost is usually after mother’s day here in Michigan and then you can transplant them outside. I usually leave seedling (almost all plants) under a table or chair (out of the sun) for a few days so that they may get use to the climate change.
As the kids got older, I just planted the seeds outside, which is a lot easily, but takes longer-especially with our so called Michigan seasons. As I say, this is a learning experiment-and no matter what you and your daughter will have a fun (which is all that matters!) Happy Gardening...