That is a lot more data than she will likely use in 2 weeks. I have used Airalo and Ubigi in the past in the UK. Earlier this month I used Jetpac for a two week to Greece, with a layover in Ireland. A European plan, 5GB for 30 days, cost $7. Everything worked well, I was very happy with it. I will use them again if the price is competitive, which it was for this trip. I used less than 3GB for 2 weeks, which is normal for me.