Would you address this with the person? Or just wait and see

I have a family member, by marriage, who is attempting to begin the same business I am in, home daycare. My concern is she has no experience or background in the field, just her own kids and those of family.

There also hasn’t been the best care of her home or children.

Just let her try it. Is she hurting anyone nope, she will prolly fail on her own but then it won’t be because you talked her out of it. And maybe just maybe she’ll succeed, and that would be ok too. I’m not trying to be mean but you worry about you boo