AITAH for a comment I (20F) made to my supervisor (30F) during closing

I (20F) made a comment to my supervisor (30F) during closing.

I work at a nursery (the tree kind) as a cashier. This is just a seasonal job I have to help pay for college so I only work summers and Christmas time. For background, I think my supervisor is low-key a workplace bully, we’ll call her Teresa. Any time you ask her for help she says no and I have to ask whoever the cashier beside me is for help. On my first couple training shifts she scolded me for doing something wrong and I said “I asked for help from a coworker and this is how she showed me how to do it” and her response was “you need to take accountability for your mistakes” and I said “I acknowledge that this is my error but I was shown how to do it wrong and it’s my first time doing this” which she did not respond well to and told me to lose my attitude. Another time my nana came into the shop and she has to take pictures of everything and she made me take a picture with Teresa. The next time my nana came into the store she gave a copy to Teresa. Now Teresa displays it at the supervisor desk for everyone to see because she knows I hate it.

The worst thing she did was on a closing shift. During closing there are 2 cashiers and 1 cashier supervisor. At the end of the shift we take up the tills for the accounting team office to count and there should be fresh tills already counted for the next morning for the supervisor to put in when opening the next morning. One of the accountants husband died and it was her first week back. Teresa yells “She didn’t count the tills, f*ing bi**” and slammed them on the table to which I said “well didn’t her husband just die, maybe she forgot, I don’t think she did it intentionally”. Teresa then turned to me and said “you’re going to regret you ever said that to me.” The other cashier and I pretty much ran down to the lunch room to grab our stuff and leave. In our rush out of the building I quietly asked my coworker if what I said was bad and she said “no Teresa is a psycho”.

I spent the whole night worried because it was just me and Teresa opening in the morning. When I got there the next day she was super nice and acted like nothing ever happened. AITA for what I said? Should I be worried she’ll retaliate? I told my other supervisor what happened and she told me I should speak to the coworker who was witness and report Teresa. Should I do that or just leave it?

Any comments are much appreciated

TLDR; I told my supervisor to not be mad at the accountant for forgetting to count the tills for the next shift because her husband had just died and my supervisor threatened me for my comment. Maybe I shouldn’t have said it but I was trying to be empathetic to the accountants situation.