<human>: Give me a shortened version of the text

Dating 6 years engaged 6 months ago. 

This problem is more comical and less serious then the other posts on here. 

This mostly comes up at the gym. The gym is kinda something I've been pushing her to do with me she's happy that I push her in that way but she is very defensive there in particular. Sometimes she'll be totally popping people's space bubbles. Especially when she's waiting for me to get done on a bench. I have to remind her to give me and them space and occasionally she walk into me doing flyes, but she blames me for not paying attention! The other day I was using the rear delt flyes machine, facing forward no mirror in front of me and her behind me . As I'm in the middle of a work out totally  focused on my set she walks by the machinery and gets tagged in the arm. I apologized but once again it gets under my skin because I don't really feel at fault.
I really tried explaining to her that at the gym you have to give people space and it's really up to her to be on the look  out for people with lethal amounts of weight at the gym. 
Most the time we get by with close calls to anything serious but this is a hazard. One example of a more serious incident I was lifting a really heavy garbage can to empty all the contents. As I'm putting it back on the ground she looks under neath it and by accident  it hits her in the head. I apologized but she was still upset that I even brought up the fact that she needed to be more careful. 
 This might just be a problem  I'll have to take with a positive attitude  and laugh off every once in a while. However , she's super sensitive so if I do laugh she might think I'm laughing at her. Idk might be pretty serious too, considering it could put her in serious danger one day.
<bot>: S/O really lacks body awareness and it gets under my skin every once in a while. Blames me for not paying attention when she runs into me lifting heavy  things.