WP 8.1 For My Mom?

We just bought my mom a new 925 from Newegg. She is an EXTREMELY simple user of her phone. She literally just uses email, messaging, phone calling and Skype/Viber, She doesn't even use the browser. She currently is using a Lumia 710 on WP 7.5.

She dislikes change. She even has trouble adjusting to the differences between my dads Lumia 920 and her 710. So the question is when the 925 comes should I give it to her with WP 8.1 installed? I feel like once the update becomes official she will have to learn how things changed again. Maybe this way after the initial learning curve she can figure things out? Also are things on the 925 stable enough to make the experience usable?