I know her as Megan from the Progressive TV ad or the gal from the latest Milo's Dog Treats TV ad. Melamie is very recognized and memorable by her voice, however she was on Notes from the underbelly and I don't remember her from that! Also found that Melanie has worked with Yoplait and 1-800 Dentist.
So I would say between 8 and 13- depending on the maturity level of your child. In texas there is no law that stipulates when a child is old enough to stay home alone. In fact there was a news story on this just this month (I'm pasting the details for you below.). Good luck!
Legal age for kids home alone. Some states have laws governing what age you can legally leave them home, ranging from age 8 all the way to age 14. Check out the list here to see the specific laws in your state. Most states, however, do not have laws, leaving the decision up to the parent. The National SAFEKIDS Campaign recommends that no child under the age of 12 be left at home alone, but not all parents think it is that black and white.