Perhaps that can be a development played with following her mutation. She learns to develop her own mindset and does not necessarily have to agree with those giving orders even if she follows them.
As for her being a permanent fixture, I see it going over better than Venus, but I don't see Jennika being a regular fixture beyond IDW.
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Michelangelo: This looks like a job for the Teenage Mutant Ninja Turtles!
Raphael: Sheesh, Mikey this ain't a cartoon!
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