You do realise that contact is meant to be for the benefit of the child, don't you? It is about her right to quality time to maintain relationships with both of her parents.
Mothering Sunday is a time for expressing your gratitude to your mother for the things she has done for you. Your DD is too young to do that and you don't need her by your side to do it for your own mother.
If Easter, her birthday and Christmas are all to be spent without contact with her father this year, you may well be condemning her to having to miss seeing one of you on every special occasion for the rest of her childhood or, when she's older, having to choose.
You need to stop focusing on what is best for you and turn your thoughts to building the cooperative pattern of contact and communication that will best support your DD's well-being as she gets older.
Having parents who live apart will be hard enough for her. If they are bearing grudges and using her to score points over each other, she will experience far more heartache than is necessary.
For your DD's benefit, you need to take this on the chin, plan better in future and start working with your ex wherever possible from now onward.