Oooh, Fi...
I find those times best to go outside & hang washing on the line... Or check the letter box... Just leaving maddy (when younger) or Indah when the time comes... In her cot or a safe place where she cannot hurt herself etc & then let them know I am just.... whatever it is I am doing.
Then once it's done I say Ok, I am coming back now for kisses & cuddles....
It seems to work as we have both had a chance to calm down from the situation..