Girls, A legitimate reason for a break up?

Hi, girls. My recent girlfriend just broke up with me over a text because she "was putting out too many fires" in our relationship. The only problem is she tells her mom everything, and her mom is a known drama queen. My ex is 21 and she claims she's an adult capable of handling things on her own, but whenever I wanted to talk about whatever was bothering her, she'd reach for her cell phone and contact her mom instead. Truth be told, the "fires" weren't even fights, they were disagreements blown out of proportion. Even afterwards, I'd still open the doors for her and do other things out of respect. Looking back, I realize this is probably for the best. I just wanted to know if she's emotionally immature or if I'm majorly overlooking something. It may be worth noting that I'm a year younger than her, too. Thanks.
Girls, A legitimate reason for a break up?
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