Originally Posted by AverysMomma
I love friendly kids...I love the kind of kid, who never met a stranger...*I* was that kind of kid myself...but these kids weren't interested in meeting the OP, they were interested in the OPs stuff and the LOs toys, etc. They didn't walk up, talking a mile a minute "Hi I'm Mikey, I live over there, you live over here, my mom said I could come over here, these are my friends, hey, is this your stuff, this is sooo cool! Can I touch it!?" - they just walked in and started handling her things. Not cool, not even a little bit cool, not friendly, not okay. Just...no.
I agree with other posters that their curiosity, desire to play with "new", cool things, and desire for positive adult attention is completely normal for their age and not concerning.
I cannot rate their walking into the OPs garage uninvited and unannounced, not introducing themselves, picking through her stuff, inviting themselves into the back yard, and badgering her until she finally relented as normal, or acceptable. Kids their age might be a little slow on social cues, but jeepers. It's just rude, no matter what their age or sex.
OP, we had a bored/lonely little girl about 3 years older than our son who wanted to be playing with us every single time we were outside, too. She was a little rougher physically and verbally than I was comfortbale with, so I would only let her come over when I felt up to it. And I was honest with her. I'd tell her, "I'm not up to watching all of you right now, and if you're in my yard, you're my responsibility and I have to watch you. We'll be out again later, and tomorrow, so we'll try then." She'd be disappointed, but would then go and find someone else to play with...and when she did come over, she always asked first. And she introduced herself the first time we were in our yard and she came out after they moved in. And she was only 6.
If I were you, I'd say to them next time, "Guys, I don't know anything about you, like your names, or anything like that. We need to know each other a little better before you can come play, and you can't be picking through the garage." and if they won't listen, or press, try the "I can't watch all of you right now, come back tomorrow" thing, and tell them they need to go. Personally, I would let them play sometimes, if only to forge a little good will, but I'd also make it on my terms and not theirs, since technically you are responsible for them if they're on your property.