There are several different machines that are great for traveling. The Singer model 221 Featherweights made between 1933 and 1965 are the best. Janome has the Gem (in Gold and Platinum). Bernina has several models of Bernettes.
You will probably need to take an adapter, as I believe European electricity is 220, while most American machines are wired for 110.
Best wishes and prayers for your mother.