[28F] [27M] in a long-term relationship for 11 years. I identify as male.

I’ve been in a long-term relationship for 11 years, and we share a lot of experiences together. We've traveled and done so much that most people might not accomplish in a lifetime. I truly enjoy life with her. Recently, while having a drink, I tried to open a bottle of LALO tequila that had frozen water on the side. After several unsuccessful attempts to remove the cork, I tried using a spoon for leverage, but it was too small to be effective. After a few minutes, one of our mutual female friends offered to help and easily opened it. The next day, my girlfriend expressed that the whole situation gave her the "ick." She felt like I didn’t put in enough effort and mentioned that this kind of thing had happened before. I honestly didn’t think it was that big of a deal and was unaware of other instances she was referring to. To give you some context, I grew up without a father figure and was often treated like a “Mexican son” by my mom and grandmother, which I know played a role in how I look at things. She then told me that she wants a partner who can protect her and show strength. I admit that my first instinct was to feel upset because I believe I'm a good partner—I'm almost finished with my medical degree, dedicate myself to her, and do my best to provide for us, whether it’s with food, vacations, or anything else. I work part-time while in school, and although she has a solid job and is independent, she currently rents with her sister. She also reminded me of a conversation from a year ago where I said I wanted to get in shape for her. However, my commitments to school and work keep me occupied five days a week from 9 to 6, plus I need to study for three to four hours each day. I’d appreciate any advice or different perspectives on this situation. I’m feeling quite lost and hurt by it all. If you could indicate whether you’re male or female and your age, that would help me understand various viewpoints better. Please feel free to be honest.