Elise, you know when you will feel better?  When the time comes (and it
absolutely will come) when she forgets she ever lived anywhere else.   I
know it seems hard to believe, but that time will come that she will finally
be OK with it.

My mother in law was originally from another country, and due to political
conditions of hundreds of years, the people of her country were very insular
and didn't really like to mix much.   She spent all her life associating
with people of her own nationality and speaking her own language.   In all
the years she lived in this country, she never truly acclimated.   Add to
that our fear that she would forget how to speak english entirely, and you
will know why we hesitated to place her for as long as we did.   We feared
it would be like being in a totally strange place where she would forget how
to even ask for a glass of water in english.

Those fears never materialized.   She never forgot how to speak english, in
fact she actually improved when she had to speak it all the time to be
understood.   She acclimated to the nursing home within weeks.    She began
to actually enjoy the routine, the entertainments, and it worked out fine.
She still had alzheimers, and it still progressed further along, and she
still lost mobility, continence, and cognition, but she did OK there.   If
she acclimated, anyone could!

I am not saying that everyones loved one will follow the same pattern, or
that all the circumstances will be the same, but in the years I have been
posting here, the same story has come up over and over, and they mostly all
manage to adjust and become comfortable.    The best way to make sure it
works out that way is to listen to the professionals.   Walk away, let them
have time to adjust, and stay away for a little while so they can settle in,
and then keep an eye on things with regular visits.

It sounds to me like you have a good plan implemented.   I would do the same
thing as you are doing.   Get her set up and comfortable, and remove that
suitcase!   Every time she sees it she'll be packing it up again otherwise!
That was what we had to do.