Every child is different, every parent is also different. What may be appropriate for one child may not be appropriate for the next.
I'd suggest reading and watching reviews, if you're okay there, play it by yourself (without your child), if you're still okay, I'd suggest taking it to where you're supervising your daughter (if you find it necessarily) and when you think it's alright, then allow her to play it on her own.
I don't think there's anything wrong with exercising caution and educating yourself with the games your child is playing.
That said when I was a child I was exposed to horror movies, and with that there was... exactly all the things you'd expect of typical slasher films (80s/90s). But I loved them, so much so I thought everyone died by getting murdered for too many years (I started watching horror movies in shows in elementary school) And the games I played, like mortal combat... smh now. Lol. I turned out growing up to be a decent and empathetic/sympathetic adult, but looking back I probably shouldn't have been watching all of things I seen, and someone should have at least been telling me about what I was seeing.
But that said, I wasn't the type of child to see what I seen in movies and games and go out trying to do that irl, but there are some kids who take media too be reality. So yeah, I mean it all depends, that's my point lol.
Now obviously the sims isn't a violent game, but if you think you're child might not be mature enough to handle the woohoo, try for baby, the making out, and the cartoony fights, then I'm sure you know best as the parent. But I do think it's fairly tame as aside from the making out, you don't actually see anything. And you certainly don't see anything I'd think was graphic.
Though I feel like the Get Together did step up the... romance levels (a lot more suggestive imo), so before you buy eps and things, I'd suggest looking into them as well.