Screw how long people 'usually' take to get over things. That can't be measured in days and weeks and months. People take years to get over BREAKUPS, let along actually losing someone for real. You're entitled to grieve as long as you want or need to, and anyone that says you're 'taking too long' is an insensitive jerk. Don't let anyone try to invalidate what you're feeling. Your feelings are valid, they're honest and they're exclusively yours, something that no one else has a right to intrude on unless you explicitly invite them. Don't ever be ashamed of yourself for continuing to feel love and loss for the heartbreak you've been dealt.