my Grandchild

My ED has been estranged from me for 7 years,  her first baby is due in a month and I have written to her to try to salvage something from this heart breaking situation and to ask her if I can see and have a relationship with my Grandchild. My letter was conciliatory, sincere and from the heart.  The reply I received was toxic. She will in time allow me to see my Grandchild, my only Grandchild for 1/2 a month, 6 hours a year. But only if I obey her' rules', which are many and unsustainable. In time I can see the child for this 1/2 but only at her fathers house. if I behave and obey the 'rules' I MAY in time be able to take the child for a walk , again only if I obey the 'rules',  and from her fathers house.  I can never take the child to my house. I will not be allowed to have Christmases or birthdays, family days out or family celebrations with them, I will never be allowed to pick the child up from nursery or school. I will never have overnight  contact or be allowed to babysit. I will never receive cards 'to Grandma'. I cannot believe she would use this child to manipulate and control me, she is using this child a s a weapon against me. My ED is seriously disturbed and I fear for my Grandchild being brought up in such an atmosphere of bitterness and resentment. I have declined her offer as I feel, in time this will be very detrimental to my grandchild. I am devastated and deeply saddened. This child I gave birth to , loved and cherished has shown me such contempt that is inconceivable to a normal person..