Is she ever legally obligated to do anything outside of provide times for me to come over and see my daughter?

On my court order, it states that there will be shared holidays, as both parties mutually agreed upon. However, communication between my family and hers is completely nonexistent and while the mother would be quick to point out that no one has ever contacted her during those times, fact is that my parents and myself have over many instances tried to contact her for times in the pursuit of either bringing her over to my parents house or even just allowing me to have a few hours with her some day when I'm not working. The wording fair and liberal parenting time is vague at best but knowing I have any leg to stand on in this would help me immensely in determining how to proceed.