Rainbow Shops review: Cashier/manager

On November 3rd at around 4:40PM I went into rainbow with my 4 month old son to grab a dress and shorts. As I go to the cash register the manager is doing a cash audit with a cashier ok that’s fine. She tells me it’ll be a moment. I put my items onto the area where you can sit things down because my hands were full of course and waited patiently with no irritation at all. I was very respectful. When they finish the manager tells the people behind me that I know was not in line before me they can come ahead since they were waiting patiently in that moment I did not realize what she meant because I was a little confused.. the people behind me says it’s ok and I check out. I tell the lady thank you and she says mhm.. with a clear attitude. I don’t understand why she had an attitude towards me but her whole demeanor was rude as if I did something to her. That whole interaction made me upset because I felt as though I was in line being nice with my son in my hands with no issue because I hold him often but to tell someone behind me they can go because I guess she thought I was being rude for putting my things down while they were doing the audit was just so disrespectful and rude