Is Pairs Figure Skating hard (for the girl)? (ie. the lifts, twists, throw jumps, pairs spins etc.)?

Pairs spins and side by side stuff are pretty easy. Pairs spins you just need to learn to spin on different edges. In singles camel spins for example, you spin on a left backward inside edge (if you're right handed), whereas in a pairs camel you spin on a left forward outside edge. It just takes some getting used to, but its not difficult. Side by side footwork, jumps, and spins are just all about learning how to adapt your timing to match your partner's. If you have good solid jumps, you should be able to modify your entrance without too much difficulty. Lifts are a bit harder, just because in singles you never really use your arm muscles, so I'd recommend hitting the gym and doing some serious arm work-outs before even attempting any lifts. Twists and throw jumps are a bit harder to get used to because they really are very different than anything you do in singles. The entrances to the jumps are different than they are when you do them solo, and it is a weird sensation to be soo much higher than you could get on your own, it does take getting used to. Hard? Not exactly. Just a LOT of practice!!