To be fair, in the Barbie book, she was supposed to be a computer programmer. What computer programmer do you know that would go to the campus tech support guys to help her do her programming homework? It was a dumb plotpoint. 
I really don't want to debate the plot of a Barbie book, but it encompasss a pet peeve of mine, so I will just this once.
I am a professional software developer. There are many things that I don't know about software and technology in general that I have to obtain help with. Software develolment is such a huge field that no one can really know everything. When it comes to removing viruses and making a computer/network secure, I'm useless if it doesn't involve pressing a "Scan my computer" button followed by a "Remove virus" button.
So in my opinion (and I'll pre-groan for the following statement here), there's absolutely nothing wrong with Barbie having to obtain help in fixing her computer.
If one of the two characters who helped her was female, there would have been no issue, and that is just mind-boggling to me. Some artist starts drawing a character and at some moment adds the few feminine details that makes it a women, and nothing happens. It's just another forgettable Barbie book. A butterfly on the other side of the planet flaps its wings and that same artist instead adds the few masculine details that makes the character a male, and suddenly my Facebook timeline is on fire.