With you being at Uni .... I'm guessing your Mom's in her 40/50's (not that it really matters)
Stay exactly the way you are, and continue what you are doing, my lovely lady was dx when she was 49, 4 years ago, one daughter lives in London and at the time one was at Uni up north.
It's a shock, one daughter told her close friends, but found it pretty frustrating with the continual questioning that she decided to say that her Mom had been misdiagnosed, but that doesn't mean that she has remained exactly as she was and has shown what a lovely lady she has turned into.
Just hang in there, do what is best for you and tell your Mom to do the same for her. Life doesn't stop and be mindful of advice you receive, because that is just what it is .... advice ... not instruction.
Don't freak out .... treat yourself and your Mom as you always have. You will be surprised about how well things can work out. Don't focus on the negatives, everyone gets one run at life, sometimes it's tough and unfair and we always ask ourselves .... Why Me ? .... when it probably should be ... Why not me ?.
Be strong, laugh as much as you can at as much as you can. Your Mom will always be your Mom and stating the obvious .... Just be yourself ... It's been good enough so far so why change.