Okay, so you want to distance yourself from crushing. Well first and foremost this requires distancing yourself from the object of your fancy.

Evaluate your feelings: What are they based on? Are they realistic? Are they achievable? And does the end justify the means? Who stands to gain from this and who stands to lose from this.

Ask yourself what you would tell a friend who is experiencing the very same situation?

Now evaluate the reasons not to act or possess the feelings in much the same way. I am guessing that you would find the situation to be unrealistic, that it is not worth it in the end, and that a lot of people stand to lose.

If this does not alter your feelings then I am sorry but I think you need to look for chinks in her armour. What is not so great about her and how does that impact you.

Just my thoughts.