It's a tricky one. Having been in the position where I just could not physically lift or carry X at all, he learned quite quickly that it wasn't going to happen. In our case it was a simple "you walk with mummy or you sit in the stroller. If you don't choose, I'll choose for you (i.e. the stroller)".T This was a phrase I learned from a great early parenting talk I went to, give them a simple choice and be prepared to enforce YOUR choice if they don't choose. I found that having to put him in the stroller & do the straps up, whilst still difficult, was less burden for my hips than carrying him. He did pick up quite quickly that I meant it, and most of the time was pretty good about toeing the line. If he dawdled or tantrumed, he also knew I'd put him in the stroller.

I encouraged him to say if he wanted to get out & walk, and I found if he understood I would let him out of the stroller & walk provided he behaved, that seemed to work well. Often the mere threat of back in the stroller meant he'd smarten up & walk with me rather than being a silly billy. So saying, with all of this, he wasn't yet 2... and I do think the post 2 tantrums are worse (and physically bigger!). But equally I think if you're really consistent with it, she will learn. If you physically were absolutely incapable of it, she would adapt. It's a question of whether you want to stop all carrying on the way? I think it can be tougher if you carry them some days, but then refuse other days. Good luck.