Answer:
mental set
Step-by-step explanation:
From the question, we will be working with the information on Eva's mentality after changing things that she is used to before, that is to say her software package which she upgraded and yet she(Eva) works like she is working on the out dated software. This kind of mentality is known as mental set that is to say, when someone is seeing things in the old ways or perception despite the fact that there have been changes in the old ways or perception which is the same thing that happened to Eva in the question, Eva's mentality is already set.