I find this troubling. My poor relationship with my adult children causes me distress. Logic and the dharma would suggest that severing ties with them would be a positive for both sides. But I cannot get over the feelings for neglect and guilt. Plus I may be causing them some current discomfort. They neglect me because they don't understand me seeking the jewel so I try to respect that BUT how do I get past this guilt and sadness?
Buddha-Dhamma & Western families are often a problematic combination. Even in Asia, some families object to their members pursing the Dhamma. Even when a person's life is transformed so much for the better by Buddhist practise, often family members struggle to attribute appreciation towards Buddhism due to their own prejudices, misunderstandings &/or lack of spiritual values.
Ways to overcome sadness & guilt in respect to his situation is:
Reflect on the correctness of the Buddhist path.
Properly attribute causes or 'blame' to the other rather than to yourself.
Keep being nice & hopefully they will change via appreciation.