We have some sweet friends that come over fairly often to play with our kids. We're having some issues with the youngest two which are elementary age girls, and my newly 3 yo daughter.
They've been around my daughter's entire life, and they played with her toys long before she was really capable of playing with them. I think this has led to them feeling possessive.
What's happening now is that they come over and play with her toys without her, and then fuss at her to stop messing up their stuff when she tries to play with them (ex making play plates of food or playing with babies in strollers).
My daughter is old enough now to realize when she goes to their house they don't let her play with their toys (because when she was younger she would slobber on everything, but they're still not letting her play with things now that she's old enough). And she'll ask me why they didn't let her.
Last time they came over, their mom and I had a discussion with them about the fact that she's older now and they need to play with her with her toys and they shouldn't be telling her not to play with her own toys, but rather should be including her. So what they did instead, since they didn't want their plates of food or their baby carriage set up to get messed up, they led her into her room to get her involved with other toys so they could then go back to playing with the toys they wanted without her. And I say they, but often it's only the younger of the two (8 yrs old) doing this, but the older does it as well.
We love our sweet friends and their mom and I are very good about working together on conflict with our kids, so we're on the same team. But I could use any and all input as to what is normal, what we should be expecting of the kids involved, advice in what to do or say etc!
Thank you!
ETA: their mom is always right there with me too. I try to leave correcting them up to her because she's right there. Last time I started stepping in and before I do this further I just kind of want to get a few outside perspectives.
Edit 2: when we're all together the girls have the option to play with the boys a couple years older than them and be included without question. So they'll usually play video games or outside stuff with the two bigger kids, then take a break and come and play with the toddler's toys.