DDs phone is off/dead should I worry?

[Clerenty]

DD is 17, we are Scottish so she is already at uni, her birthday is in February. She moved to London for uni.

I messaged her at 5pm, she told me she would call me when she got home at 6/6.30pm. I haven’t heard since and when I message her on WhatsApp it one ticks, when I try to call it goes straight to voicemail.

I know I’m probably panicking unnecessarily but she was pretty clear about not having any plans tonight and it wouldn’t be like her to have her phone off, if her phone dies she usually charges it back pretty quickly and always takes her battery pack with her.

DH thinks I am being dramatic and if we haven’t heard from her by the morning we should worry but she might just be busy with friends.

AIBU to be worried?

Yep. You pay fees if you study outwith Scotland. Scottish Govt do approve a loan for you for the whole amount, but yes, it's a lot more expensive.
The qualification for free tuition at point of study is assessed on how long you've lived in Scotland, so not strictly 'Scottish citizens', just those who have been educated/lived in Scotland for (I think) 7 years.