Michigan Tech is absolutely gorgeous (barring the UP winter) and is great for STEM majors. Houghton is a great city that offers a different experience for those that live in the lower peninsula. I would recommend.
The same can be said for NMU, city-wise. Marquette is better, actually, in my opinion, however NMU has a much lower prestige. (For reference on the student body, several of my classmates were admitted with GPAs of 2.0 or even lower) and NMU is also regarded as a party school.
Kalamazoo is located in Kalamazoo (obviously) and personally I wasn’t a fan. (I’m from the UP so take that into account) The school however is nice and prestige seems high according to a teacher of mine who is a graduate (I’ll admit I know very little here)
MSU is much like Michigan in terms of size of campus, so if she didn’t like Ann Arbor, I don’t see her liking East Lansing at all. MSU does hold prestige but it is a step down from UofM. The scene here, as well, is a little on the party side from the view of several of my former classmates snapchat stories, so be wary if you are wanting to avoid this (which I’m sure is possible)
Albion my sister actually fell in love with. Yes it’s religious, but it doesn’t push it on you like say Cornerstone U or even Calvin from what I’ve heard. The campus is suburban with groomed lawns and beautiful buildings and I enjoyed that. The school is private so cost is a major factor, but prestige seems fairly normal (certainly a step up from NMU, but a step down from UofM)
Lastly, I’d HIGHLY recommend looking into Alma College. I was nowhere remotely interested in this little school, and it won me over. Alma is small, much like Albion, but it is caring! I’ve done two overnights with accompanying tours, and they offer lots of merit and financial aid which is nice. As for prestige, this schools Bio/Chem programs were the school’s selling point. They are incredibly strong! My other sister and best friend are attending next fall after they saw how close knit the student body was, and how much support the faculty gives to its students. While on my overnight, several of the students chose Alma over UofM and hold zero regret.
Good luck, and maybe put Alma on your radar!