@showersandflowers
Honestly the first term of uni is a rollercoaster. New life, new timetable, figuring out how to live alone but also alongside strangers, cooking for yourself, laundry, finances, trying to figure out who your friends are, deciding which hobbies to sign up for, drinking and partying and that's before you even count any of the academic work!
Honestly, I sort of forgot my parents existed the first term of uni. It was just such a different life. She probably got it and felt very grateful but then just this overwhelming new life got in the way. She will miss you though
All of this. ^ 'Children' in their late teens - when they have gone to uni live in a parallel universe @DarningNeedle and don't give a second thought to home and family. I didn't get a birthday card or Mothers Day card for 2 years straight, and on the first Mothers Day after DD1 started uni, she spent it with a new uni friend and HER mother. Having this cosy little lunch on Mothers Day and putting the pics on Facebook. I was crushed.
I was alone as DH was working, and my own mum had already passed away. I heard nothing. Not even a text. My other DD sent me a text wishing me Happy Mothers Day, but that's it. Nothing from either one. It was so upsetting seeing everyone with their mothers and their children, whilst I was alone. 😢
Both my DD were so detached from home, and me and DH when they were at uni, and it was so hard to adjust and adapt. They were also quite rude and ungrateful at times.
Don't take it to heart OP, but yeah as pps have said, message her and ask her if she got the package and if she liked it. I bet she messages back and says 'oh year, I love it mum, sorry for not messaging sooner. I promise you it's not deliberate! 
My 2 DD are much better now (late 20s) and more thoughtful and we spend time together on Mothers Day and my birthday etc, but even now, I can sometimes wait 2 days for a response to a Whatsapp message, as their lives are sooooo busy. Personally I don't think it would take them more than 30 seconds to send a quick message back, but that's a whole other thread!