We've had this cleaner for just coming up to a couple of weeks after having to let our former one go [same agency]. She's done a really good job so far - the only issue we've had is her leaving stuff like the vacuum upstairs in the guest room, presumably because she didn't have enough time to bring it down (even though she would have had to go downstairs to leave the house), but I just put a note in our record book asking that she returns any cleaning stuff back to where it's usually kept.
Just came home from college today unexpectedly (exams start this week and had to lug a bunch of books home, plus recovering from the most godawful flu) and our cleaner was still around. All well and good, but her mum who had "come up from Wales" was here as well "helping her out".
I don't want to make a big deal of it, but I just don't like the fact that there's been someone else in our home and we weren't given any prior warning. It took a long time for me to be comfortable enough with getting a cleaner in the first place. If she'd mentioned it and asked beforehand, I don't think I'd have said no (although, come to think of it, it may raise potential issues about any insurance the agency has taken out). Her mum isn't registered with the agency and I don't want to call the agency in case she ends up with a formal warning or, at worst, losing her job.
I didn't want to raise it with her whilst her mum was here as well, so was just going to leave a note in our record book (as I'm usually not home on the days she comes in). I don't want to sound harsh or rude, but I do want to make it clear that we would like prior notice before/if she is planning on having someone come in with/replace her on certain days and that whoever is coming in needs to be registered with the same agency, so any ideas on how to phrase it would be much appreciated. Then again, I could just put it down to a one-off and just not say anything, but I think I'd just keep wondering if she'd do it again.
So, AIBU to be annoyed by it? If not, how do I make sure, in a way that doesn't cause offence but makes it clear that it's not something I'm happy with, that it doesn't happen again?