That's a hard situation, to still attend when your ex and her family are in the same congregation.
Only you know, what is best to do in your situation.
I can tell you what I did. I am also divorced, df'd for apostacy, left alone by all my jw friends, my ex trying to limit my time with my son (3 years) as she said that she always will take him to the meetings, even if it is during my visitation time.
I'd never ever try to get reinstated. If someone is shunning me, it is their problem. However I am glad, that my parents don't shun me.
I slowly made new friends, who don't drop me just because I feel or think differently. I enjoy my free time, no service, no meeting anymore. I do some volunteer work of which I hope my son will be proud of me one day. And most importantly, I fight for my visitation time, I went to court and got the right to be with him every second weekend from Friday till Sunday and shared custody. Also my ex has to accept, that if he is with me, there'll be no Friday and no Sunday meeting for my son.
I celebrate his birthday with him and make it known to him that I don't follow all those crazy JW rules and that there is a world outside of JW life. I try my best to show him a moral way of life that is based on love, compassion, human rights and freedom. I show him tolerance of many different religious views. And I do everything that he has happy moments with me and that he feels loved by me. Love is the greatest weapon to counteract his indoctrination.
But I could never ever pretend to be a JW and hide something in front of my son.
Children are very smart. From an early age they realize when you are pretending something you are not.
If your daughter is older and she realizes your true feelings, I bet that you'll be df'd again.
You could ask yourself:
Would I allow a blood transfusion, if my daughter needed it?
Do I wanna raise my daughter in JW ways, when she is with me during my visitation time?
I was disfellowshipped for those reasons. Because I told them that I would never ever let him bleed to death and because I celebrated his birthday and because I didn't believe that a god of love commanded all those cruel things in the bible and that he never ever would kill innocent children or those who don't believe in him in armaggeddon. I openly told them that their shunning rules are against human rights.
I am happy and proud that I was df'd for those reasons. I am sure one day my son is older will understand and be proud and happy too that I give him a view of a different life than the JW life.
I know that this all and your situation is hard and that sometimes you feel low. But you are courageous and strong and a great daddy for your girl. She'll be proud of you.