My partner definitely also concentrates intensely on work or a project sometimes, and will snap at me for interrupting. She just gets upset about being "ignore

My partner definitely also concentrates intensely on work or a project sometimes, and will snap at me for interrupting. She just gets upset about being "ignored", which is basically being in the same room with her and not mentally available (with strict requirements on response latency). Luckily for our relationship, this is triggered by my physical presence, so I can be productive as long as I get out of the house.