I think everyone has an idea of the risk they are willing to take when buying an older used car.
I forgot my daughter’s boyfriend also has a Crosstrek lol! He had an older model and wrecked so he upgraded to a 2021. My daughter has I think a 2015 with very low mileage.
My daughter thinks the new Crosstrek is an upgrade from the older models. She thinks the ride is smoother. Her boyfriend has the lane assist and she really likes that and the Apple CarPlay. My 2018 doesn’t have CarPlay but my husband’s 2019 does and I love it!
The OP’s daughter lives in Knoxville TN, she won’t have a ton of need for the heated seats.