Ok, thanks, @Pullo. If Google has been sending emails, then she'll know and I don't need to feel responsible.
I put a cookie banner on her site when the previous legislation came out, and she insisted I take it off because "it doesn't look very nice". (I offered to change size, colour, shape, location, whatever, but basically she just didn't want it. ) I really don't want to go through all that again, so if I can just remind her it's her responsibility and leave it at that, I'll be happy.