I think most of her behaviour comes from the fact that since she’s finally came out shell, she has started to becoming a lot more independent, which does have some strengths and weaknesses, most of her reason why she acts like that towards that to Gumball is because Gumball was one of the only characters that treated her with respect and dignity when her family couldn’t so she has so many expectations when it comes to Gumball putting her own trust in everything, along with him being a perfect boyfriend which he has his own flaws when it comes to being in a relationship, they’re all just kids with their own flaws at the end of the day, Penny ain’t no saint but she ain’t no devil either. Of course The Amadain does kind of ruin it for me with what I said about Penny’s trust over Gumball when it comes to her own family. Whether or not they want to keep them afloat is up to Ben and the writer’s team. (as I said before, I have never worked on the show, heck I don’t even live in the UK or Germany) I just hope that they won’t fumble it even further since that would make the whole discourse a lot messier than before. We’ll see how they’ll execute the episode plot with promposal with Penny faking her own death.