It's uninteresting because it has no application to her. Knowing how an iPhone works does not help her to make better art anymore than knowing how an internal

It's uninteresting because it has no application to her. Knowing how an iPhone works does not help her to make better art anymore than knowing how an internal combustion engine works. If you want her to be interested in it you need to relate it to her goals and objectives. Also, most artists are extremely concerned about what makes the art relevant to them, that is to say that they are not producing art for mass consumption, but primarily for the adulation of themselves, and from their peers, and possibly their patrons. What makes code interesting to us is the same thing that makes flowers interesting to botanists. Start by becoming interested in the arts and applying the skills you have (coding) to the artistic field. I guarantee you if you make art that interests to her she will become interested in how you made it. I was painting with a friend who was an artist and I had a desire to make a mondrian inspired piece so I took a ruler and started marking geometric shapes with a ruler and calculator in hand and measuring the dyes according to various ratios in an attempt to produce complementary colors. She became extremely interested in my methods and remarked at what a systematic approach I had to art and we started talking about algorithmic beauty such as golden ratios, fibonacci, fractals, color theory, all the way to the expression of general relativity in some of Dali's later pieces and the kinds of quantum effects that produce color. If you provide her with opportunities to learn more about a field she's already interested in you will have no problem getting her interested, if you start out trying to get her interested in your field you will have no hope.