A family I know "hothouses", as far as I'm concerned. The kids begin doing "homework" for Mom at age 2 1/2 or so. They are bribed with candy and/or playtime to do their work. The primary purpose (according to their mom) is to have them immediately accelerated upon entering Kindergarten. So far the school has done that, even though IQ is barely in MG range but achievement is high. It burns me up because there are so many HG kids that have not been "prepped" for acceleration. I can only believe that the reasons for this is for the over achieving parent to feel better about themselves?
Well...not knowing anything about this family, I'd say that most kids (around here, anyway) start preschool at 3, and that's my (limited) understanding of what happens in preschool. If her kids are MG, they may be ready at 2 1/2 for the material other kids are ready for at 3. So what she's doing may not be so far outside of the norm (but again, I obviously don't know the details).
And if she is aware that they are gifted, and has no other schooling options, would it be so wrong for her to hope that they be accelerated? That may be legitimately the best fit for these kids, even if they are "barely" MG. My MG sister was accelerated, and it seemed to be a good fit for her.