<human>: Condense the text into a few key points

I apologize in advance for the wall of text, and I don't even know if this is the best place to put this, but this is an issue that's really starting to weigh on my family.

A little over two years ago, my unborn daughter was diagnosed with spina biffida (we found out at a 20 week checkup.) When we first got the diagnosis, my mother-in-law was very supportive -- she would go to some of our more important specialist visits, and watch out son, who was almost 2 at the time.

Once my daughter was born, though, she seemed to want very little to do with her. When my son was out only child, she would take him overnight occasionally, and drop by the house to see him on a regular basis. That all stopped when my daughter was born. At first I thought that she was just nervous about taking our daughter, who obviously has a little different needs than our son did at her age, which is understandable. My daughter is over a year old now, though, and has only seen her grandmother a handful of times. We've tried to just give her exposure to show her that really her granddaughter isn't all that different from a normal kid her age, but she still seems very uninterested in engaging with our daughter. For a while, she would just take our son out every once in a while, but when we started suggesting that she take our daughter as well, that stopped. She's even stopped visiting the house pretty much completely (maybe once in the last 6 months.)

At this point my wife is ready to just cut ties and not worry about it, but it really bothers me that my kids' grandmother, who had been a good grandparent to our son up until our daughter was born, won't be a part of their lives. Am I over thinking things? Should I just sit on it? I thought it would have gotten better by now, but it hasn't. Does anyone know of a good resource for this type of situation?
<bot>: Mother and law cut ties with the family after our disabled daughter was born. Up until then, she had been an active part of my son's life. Wife is ready to give up on the situation. Now sure what to do.