You can get a payg card from kalixa, ffrees, or cashplus. They need to mail it to you so ONE TIME you need to get to the post first. Worth having. I have 2 of these. All statements are online and topping up with cash is easy. I booked it with the right first initial but a different name - not sure why but in my world of deception, this helps confuse things. Not sure these work for sims ... but useful for lots of things like a bit of cash on UKP for RB, tips on chaturbate and so on. For you blue pill guys, I guess helpful for lloyds.
If it arrives and she gets it first, just shrug and throw it in the bin as junk mail. If you can't fish it out later, just try the next one.