<human>: Can you succinctly summarize the text in 1-3 sentences?

I'm a little lost. Actually, more than a little. This is a recurring problem. My SO is one of six, and she's been taking care of herself and her siblings since a fairly young age. I am an only child who with an overbearing, overprotective mother (whom I owe so much to). I had a rough time learning to take on personal responsibilities and I feel like taking some control of my own life has left me with a superiority complex when it comes to personal responsibility.

So when my girlfriend decides to go out without me, I tend to grill her on all safety-related questions, frequently making irrational assumptions or getting upset when she gives off a devil-may-care vibe. She is much more of a free spirit than I am and likes to explore, especially when it comes to taking long walks. I like to plan in advance whereas she prefers to leave a decent amount of wiggle room.

Before you condemn my behavior completely, in these situations she is quick to anger, alleging (not entirely incorrectly) that I treat her like a child. 

My problem is simple: I realize I can be overly sensitive and have a hard time trusting her 100% to take care of herself, but I feel being responsible for herself for so long has left her with a chip on her shoulder. She puffs out her chest in defense so quickly she doesn't take the time to consider whether some of my suggestions are actually helpful or things she didn't consider. How do I find a middle ground?
<bot>: I worry about and treat gf like a child sometimes but she gets defensive so quickly she doesn't consider the occasional value of my advice.