Not sure if you (or she) means 'touchy' as a physical contact, or rather as an emotional expression (touchy, feely)...
If it is related to emotions, you might be too sensitive. For example, you see a romantic movie and you start crying. She says that you are too short and you get insulted. She doesn't texts you for 2 days, and you are already all anxious and depressed, thinking that she dumped you and so forth... You reacting or over-reacting emotionally...
That's no good. You don't want to react that much, you want to be more emotionally distant, more cold(er). There is no need to go overboard...