My mother is travelling abroad to visit her family alone and I was wondering what can she do before and during her travel to ease her travels and ensure her safety? Could you kindly suggest any duas and actions she can perform?

Yes I recommend the following:

Read this Du’a 4 times:

اللهم اني اتوجه اليك بنبيك نبي الرحمة واهل بيته الذين اخترتهم على علم على العالمين
اللهم فذلل لي صعوبتها و حزونتها واكفني شرها فانك الكافي المعافي والغالب القاهر

“Allahomma inni atawajjahu ilayka bi nabiyyika nabiyyer-rahma wa ahle baytihi-lladheena khtartahom ala ilmin alal alameen. Allahomma dhallel li so'obataha wa huzunataha wakfini sharraha fa innakal kafil mo'afi wal ghalibol qaher."