Given Sydney's total lack of reaction to Harem's teleporting behind her with her hands on Sydney's shoulders in strip 2498 versus her previous teleport reactions in the two days prior, I though it might be interesting to keep track of various Sydney reactions to things such as: teleportation, being startled, unexpected realizations, etc. to see how she progresses as a character.
We'll post links here for different threads of reactions, starting with teleportation and branching off into other areas as they come up.
*Edit*
First reaction thread: Teleportations! Harem's, Jiggawatt's, Sydney's own, etc.
First meets Harem:
http://grrlpowercomic.com/archives/402
Crashing Sydney's intake interview:
http://grrlpowercomic.com/archives/558
Harem bringing coffee post battle royale
http://grrlpowercomic.com/archives/1611
Comic shop entry
http://grrlpowercomic.com/archives/1675
Club Oontz roof lounge
http://grrlpowercomic.com/archives/1933
Construction site, giving Varia a lift. Bonus: Jiggawatt lightning-stepping!
http://grrlpowercomic.com/archives/2026
Interrupting Doc Chevy
http://grrlpowercomic.com/archives/2095
Lightbee upgrade: go to projection
http://grrlpowercomic.com/archives/2409
Acme Special and 2+2
http://grrlpowercomic.com/archives/2498