Regarding the questions:
The Knights will never be heard from again. It's always seemed doubtful to me that that one battle represented all of them, but I think it's reasonable enough that they might think there's no reason left to come after this. After all, Glory 'used' the key, so theoretically they might think it's already gone. In fact, some people actually interpret it that way, anyway, that the Key is used up and gone leaving only Dawn behind.
Willow didn't cure everyone. She had to be touching to make the spell work and she only had the one opportunity, unfortunately.
I can't recall exactly what you're talking about with Spike, but I can tell you there's absolutely nothing in the Gift that requires any information from Angel. Unless you mean who was on top of the tower? Because that's Doc. Or if you mean who was in his head? Because that was just Willow using her telepathy trick/spell to communicate across the battlefield.
The Knights will never be heard from again. It's always seemed doubtful to me that that one battle represented all of them, but I think it's reasonable enough that they might think there's no reason left to come after this. After all, Glory 'used' the key, so theoretically they might think it's already gone. In fact, some people actually interpret it that way, anyway, that the Key is used up and gone leaving only Dawn behind.
Willow didn't cure everyone. She had to be touching to make the spell work and she only had the one opportunity, unfortunately.
I can't recall exactly what you're talking about with Spike, but I can tell you there's absolutely nothing in the Gift that requires any information from Angel. Unless you mean who was on top of the tower? Because that's Doc. Or if you mean who was in his head? Because that was just Willow using her telepathy trick/spell to communicate across the battlefield.