Asalamualeikum Wa Rahmatullahi Wa Barakatuho May Allah swt protect guide and comfort you. Ameen Dear sister Do NOT worry! The very fact that you repented as quickly as you did and showed immediate remorse and regret is a sign of the purity of your Niya!
It is true that Allah swt does not keep angels with whomever has the habit of loosing their temper. Such people are very far from Allah swt to begin with for they have come so far as to forget that Allah is their protector and comfprter and can help them face whichever obstacle. Thus they have grown cold through their own frustrations and always try to face their obstacles on their own for they do not feel the presence of Allah swt any longer.
When we make Salaht and Duah to Allah swt we feel connected to him, and this trully helps to keep us on the right path. It is evident by your question and wording that you both fear and love Allah swt and that you maintain your Salaht as best as you can. Allah swt forgives those who immediately remember and show remorse to him when faced with great pressure.
Simply remember the next time however that it is Allah swt who is with you, and who is greater than you and can resolve any matter if you oly submit your will to him. I wish you all the best with your sister. Inshallah.
And we should all remember how blessed we are that Ramadan is near! Time for us all to be blessed and rewarded, and forgiven for our sins but only if we follow our deen as best we can. Inshallah your Duah will be answered, and I will try to keep you in mine.
Those who restrain (their) anger and pardon men; and Allah loves the doers of good (to others). (Quran 3:134) Prophet Mohammad (PBUH) gave us the medicine for that saying:"Shake hands and rancor will disappear. Give gifts to each other and love each other and enmity will disappear".
Also Pro"A strong person is not the person who throws his adversaries to the ground. A strong person is the one who contains himself when he is angry". That good you are a strong person.
Don't worry about little stuff.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.