I lived with the shame of being unloved by my father for decades until I finally started practicing acceptance. It was what I needed to do in order to move forward, find peace, and enjoy my life. When we pretend that our dad's disregard didn't damage us, we only deceive ourselves and deny our emotions. We might turn to behaviors that numb our feelings, such as overeating, drinking alcohol in excess, preoccupying ourselves with unhealthy relationships, taking anti-depressants, zoning out with technology, and cutting ourselves.
That's why the mantra “you can't heal what you don't feel” is so relevant for us fatherless daughters. Acknowledging the hurt caused by our dad's physical or emotional absence is necessary for us to understand who we are, forgive our dads, and surrender our victim role. Otherwise, we're stuck living a life where our fathers, who weren't even a part of it, have too much power over it.
You don't need to go through this alone since you have sisters who share your pain. Open up and be vulnerable with them. Listen to their hurt. Make a pact to look after one another, so none of you fall into the traps that many fatherless daughters do: struggling with low self-esteem, becoming promiscuous, and trying to cope with drugs and alcohol. Support one another in becoming strong, independent, intelligent, kind, and accomplished women. Help one another feel worthy at those times when it's the hardest.
I'm glad you have your sisters to lean on and share your sadness over your dad. They are your best support system. While you don't need to grieve the father who chose to stay away, you do need to mourn the loving, supportive paternal figure you never had. If you think you need more help, ask your sisters to join you in family therapy where a professional can guide the conversation.