That is a LOT. Is she struggling to settle?
For what it's worth, I struggled hugely with homesickness at uni, especially the first year.
My parents both went to uni, and met there, and had a whole gang of friends they were still close with 30 years later. And I naively thought my university experience would be the same. But it wasn't. For the one and only time in my life, I struggled to make friends.
In terms of the homesickness, things got better in my second and third years, but was never gone entirely. I used to cross off the days on my calendar as "another day closer to going home".
Even though I was struggling, from what I remember, I only ever went home during the "big" holidays. It was about an hour and a half drive, or 2+ on the train.
I never shared with my family that I wasn't having the magical experience they had raved about my entire childhood. But by my third year, I'd stopped trying to win people over (I had one good friend, that I made by joining a choir, who I'm still close with today), I put my head down and focused on the academics. And actually, focusing on getting a solid degree really helped, and I do kind of look back on my memories of the hours of studying, with something resembling fondness. :)
That being said, despite a kind of rough 3 years, you do look back with rose-tinted glasses, and I remember a lot more of the good times, than the bad. I really learnt to be self-reliant, and at ease with my own company.