I know its very annoying, even a free service, but seeing as its a payed service then it should be more reliable.

Which game is it shes playing when experiencing the kicks from server? is it only one particular game or all of them(if she/you have more than one game)?

Only ask as ive got Battlefield 4 with mine and its done it numerous times, something about my internet connection, yet nothing is wrong with it, and then if i click to join another game it joins instantly? if there was something wrong with my connection then why does it connect straight away after being booted? very annoying too

Just gotta live with it and hope it gets better with updates etc.

Still manage to have some brilliant games without being kicked though, its only happened probably 4 times in the 20 odd hours ive been playing on it(thats a rough guess)

I hope you didnt buy PSN+ for £39.99? you can get it for £34.99 online. I know its too late now but you know for next time