Real answer? Because it doesn't meet the elements of incitement.
Speech is incitement if it is (1) intended to produce imminent lawless action, and (2) likely to produce such action.
This intent element (the first) is hard to prove. She would argue that she didn't intend to produce riots. She said "we will fight for the right to control our bodies" and "we should defy the Supreme Court". These words aren't likely intended to produce unlawful conduct (because "fight" generally can be interpreted in context to mean by voting or by other political means) and also fail to meet prong two, as they are not likely (at least, the words alone) to produce unlawful action.
It's frustrating because they impeached Trump for saying "we are gonna fight like hell" but it's also why Trump was not convicted, because it wasn't incitement either.
Real answer? Because it doesn't meet the elements of incitement.
Speech is incitement if it is (1) intended to produce imminent lawless action, and (2) likely to produce such action.
This intent element (the first) is hard to prove. She would argue that she didn't intend to produce riots. She said "we will fight for the right to control our bodies" and "we should defy the Supreme Court". These words aren't likely intended to produce unlawful conduct (because "fight" generally can be interpreted in context to mean by voting or by other political means) and also fail to meet prong two, as they are not likely (at least, the words alone) to produce unlawful action.
It's frustrating because they impeached Trump for saying "we are gonna fight like hell" but it's also why Trump was not convicted, because it wasn't incitement either.
Double standards, but not illegal per se.