I had an argument with wife and she left the house. I spoke to her after few days and asked her to come back within 5 days els she should stay there. She said she will come back in few more days because shes angry. Would that constitute a divorce?
Divorce needs you to utter the words "you are divorced"!
If your wife left the house that might be a sinful act from her side. But how can divorce take place without you actively wanting or insisting on it?