Sit down with her and look at pictures of morphs together, trying not to stress what you want but ask her what she thinks of this pattern or that. Let her see all kinds of morphs not just the ones you like, and ask her to make a list of the ones she likes. Then take her list and explain what makes the morphs she likes (for example if she likes a bumble bee explain that it is the mix of the spider to pastel). Teach her, and then talk about breeding idea with the morphs that both of you like set in mind as goal (if you don't agree put hers first, even if your albinos need to sit on the back burner a few years).
If she is declining the buy because of finances, be patient and wait.
If you really love your girl friend, then you have to stop thinking about what do I want... but rather what do she want. If you really want her in your world you need to keep her in your world, not just make a move for yourself. If you look at divorces across America today a lot of it has to do with partners putting themselves first and forgetting the other person.
My wife and I talk about every morph before we buy one and knowing that my wife is just as excited to see what the combination will look like out of those eggs makes me even more thrilling for me.
To steal a quote from the movie Fireproof
"Never leave your partner behind"
Also I know this may be a little deep for a dating couple but if your dating Marriage should be what you are heading for (if not whats the point),but if your relationship is really hitting hard ends, and you want out, Do it before you get to the Alter.
Matt