How much is too much?

[Luvin' Labs]

Looking to buy my oldest a newer vehicle. She currently has an 06 4Runner with 232k miles. My plan is pass this along to her sister. I'm looking at SUVs, but I keep coming back to a 2012 4Runner that is within our price range, but as about 12k more miles on it than the '06. I'd assume that most of these are highway miles, but I don't want to put her in something newer that may have more issues. I know Toyotas can last forever, but this is something she will drive for the next four years at a minimum... back and forth from Greenville to Anderson. Anything I should be concerned about or look for? Her next car will be on her own.