I'm really sorry for your loss and fully understand that you are grieving right now. But you also need to think about the fact that your DIL is grieving and also dealing with her very young child's grief and does not have the capacity to deal with your grief and needs as well. Her life has changed forever - she does not have the future with her husband she envisaged and her child will grow up without a father.
You need to set aside your expectations and presumptions. They were not realistic. You need to stop thinking that your DIL and grandson will become a substitute for your husband and son. They have their own grief to heal.
I think you need to need to take some steps deal with your own grief. I was going to write that your behaviour could come across to DIL as harassment or hounding a new widow - but I see that your DIL already regards your behaviour as over the line and has sent a cease and desist letter. You need to consider that the level and number of your demands have scared your DIL and she's worried to have you upsetting her son.
As a word of warning - and this was way back in the 1930s - my Great Grandmother caused a permanent breach in the family because of her presumptions and controlling behaviour towards her DIL. After her son's death my GGM just presumed that DIL and GD would move in with her and that she would raise the baby. She didn't listen to any objections or tried to steamroller over them. As a result, DIL moved far away to her family and GGM never saw her granddaughter again and my own grandmother never saw her niece. All contact was lost until 35 years later a woman approached in a car park of a sporting event and asked my name. It turned out to be my mother's long lost cousin. I never even knew she existed
I think you need to follow up with the therapy. Many churches have Ministers/Pastors who are trained counsellors. Colleges often offer low cost counselling. I have cut out a list of suggestions for finding therapy from a US newspaper - I hope you can find help.
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How to find a therapist
(Always exercise due diligence in selecting caregivers.)
· Ask your primary care physician to refer you to someone.
· Call your health insurance carrier or visit them online to get a list of in-network providers.
· See if your employer offers an Employee Assistance Program.
· Use Open Path Collective, a national nonprofit network of therapists providing sessions at reduced rates.
· Search the listings on Psychology Today.
· If you or family members have a school affiliation, ask whether its counseling service is available to you or maintains a list of recommended providers of mental health care.
· Inquire at your religious organization, if appropriate — many faith leaders have counseling credentials.
· Contact a local college or university that confers degrees in counseling fields; many have clinics to train their students.
· If you have a specific difficulty, such as grief, addiction, a major illness in the family, debt, etc., there may be a topic-specific support group. SAMHSA’s National Helpline, 1-800-662-HELP (4357) (also known as the Treatment Referral Routing Service), or TTY: 1-800-487-4889 is a confidential, free, 24-hour-a-day, 365-day-a-year information service in English and Spanish for individuals and family members facing mental and/or substance use disorders. This service provides referrals to local treatment facilities, support groups and community-based organizations.
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