How many times do people need to make the same "oh those classless mumsnetters hate nannies and au pairs, don't take notice" comments?
I don't think anyone really cares who hires who to help them with their day to day life. People have personal assistants, au pairs, nannies, housekeepers, cleaners, gardeners, etc. It's a fairly well known fact. Sure, some of us might like these things, but can't afford or justify them. Such is life.
However, the bigger issue surrounding au pairs, especially, is how uncomfortable the dynamic of power sits with me. Typically, a middle to upper class family hires a young female from outside of the UK (with a limited understanding of the language) for a pittance and as I've seen on plenty of these threads, treat them awfully; as if they're second class citizens. The au pair job is supposed to be mutually beneficial, however, more often than not, it seems like their only real task is to be a bargain basement nanny. Anything else seems to be too much of a hassle and a hindrance.
When you accept an au pair or lodger into your home, you should not be telling them that they cannot use the communal space in their down time. It's akin to grounding a teenager and sending them to their room. You can certainly mention that you want some free time on x evening in y location, but perhaps do so without the personal jibes and childish bitchiness on an online forum. Berating her for sitting too close to you on a sofa "night after night", when at the most, she has been at OP's house for 23 nights. It's been three measly weeks, at most. Can we consider how the au pair would feel if she came across this forum and worked out that this thread was about her? If it was me when I was in my early twenties, I'd be quite upset and want to go back home.
That's before we even think about the current lockdown restrictions that are in place. I am currently off on maternity leave with two under 2 and there is nothing open. My options are either sitting in, going out and getting drenched/slipping on ice, going to ASDA for a food shop, or going a short drive to a drive thru for food. None of these are exactly socialable activities.
I'm not saying that all families who hire au pairs are bad people. Some I'm sure are lovely and their relationship is mutually benefical, with the au pair leaving the job, feeling enriched. However, if you are going to hire someone, the onus is on you to do the research surrounding the role and expectations (on both sides), and to ensure that the agreement is one that works for both parties.
Sure, OP might just be asking for some advice. But, simply put, the relationship is a business one, and it is hurtful and unprofessional to talk about an employee in this manner online, especially as her work ethic is good and the only thing she is doing wrong is 'existing' outside of her paid hours.