Oh I should add, that playing on her own is a totally normal thing at Gabby's age
Thanks, Mel. I seem to remember from what little psychology I did at Uni (and failed miserably, LOL) that children generally don't "play" properly with eachother for a few years (uno, like proper structured play). So I am not too concerned that she prefers to be on her own. It's just funny that other kids think she's a fun one to play with when she hates it so much, LOL.
I do the same with the toys that frustrate Gab. I leave them out so that she can eventually conquer them. It took her a while to figure out carts/toy prams and other stuff to push around. She now has that down to a fine art and just cracks it when they won't roll over things (like other toys). She's just like me - if brut force won't work, she chucks a wobbly, LOL.

Relle - wow - any wonder your DS was frustrated. I am glad his hearing problem was eventually sorted out and it helped some of his behaviour.

Trish - LOL @ Tehya and her fiery red-head ways! I think you're right about Gab not having Paige around as much any more. They still see a fair bit of eachother.
Acutally, their whole demeanour to eachother has changed. They've both moved into new "stages". Paige is very possessive and HAS to have what Gabby has so she will snatch toys off her all the time or smack Gabby if she won't hand it over. Gab, of course, starts crying and waving her hands about trying to get the thing back. On the flip-side, Paige has also discovered kisses and cuddles and is always trying to give Gabby a smooch or a hug. Gab doesn't really like that either (though she has obliged a couple of times and we got the cuuuutest photo of one kiss... it's on Gabby's site) and cracks it. It's just amazing how their "playing personalities" change as they get older.