From what I've seen of the Invincible adaption I'm a bit miffed that they've gone the old route where, as happens in what feels like at least 60 percent of the time in media, in fictional romances the male character has to do absolutely everything for the girl, while she just waits around for him to be worthy of her presence and this in Invincible may be one of the most glaring examples.
Besides, the notion that Mark was obligated to tell his high-school girlfriend that he only really known for awhile his most important secret that could endanger him and her is extremely wrong. The whole nonsense over the secret identity secret-keeping was done so badly, so obviously done to create drama but in a pointless and stupid way.
"Mark, we need to help these people or they'll be killed!" :Mark helps as Invincible: "MARK WHY DID YOU RUN?!"
Then for the kicker, episodes later - "Yeah I knew, but why did you lie and keep secrets?"
In the original comic, the Amber character doesn't even show up until the 11th issue and it's only for a single panel. They over-exaggerated the relationship on the show for no real explainable reason which is why the story suffers.