What can I do to move on and have peace of mind after the death of my mom?

I love this forum. It has helped me through the past five years while caring for my mom.
My mom just passed three months ago and I need some advice on how to move on after having to settle my mom's estate.
She lived in Philadelphia all her life but after a major surgery we asked her to move with my husband and I in Texas.
My sister and brother was all for it!! We knew my mom was pushing herself to where a bad accident could happen if she continue to live without planning for long term care either in her home or somewhere else. My mom was strong minded and always waited until the last minute to decide on what she wanted and how she wanted it. Even with her meals!
So we ended up discussing with my mom to come to Texas right out of rehab and stay until her arm got better. Doctors told us that her arm should be better within the year. We left it up to our mom to decide but…. I told my sister, she would have to talk to her about what she can and cannot do! We didn’t want our mom to go into a home. My brother could help with meals, shopping and cleaning. It didn’t end up that way though. My mom didn’t feel comfortable with him living with her and she called me after I returned to Texas to prepare for her visit to tell me she changed her mind. My sister was upset but felt she had no choice. My sister had no car and had to crack the bus everyday or send her husband to make sure my mom had meals three times a day!
So, things got tense and my sister ended up asking my mom after three months, when was she going to visit Texas?! My mom then called me to say she will come if we still want her to. I was unsure but wanted my mom to have the best I could give her. My house is setup where she was on one side of the house with her own bathroom and two rooms were fixed up just for her. A lounge room and her bedroom. We bought new tv’s a recliner and my husband even framed a picture of my mom from years ago. One of her favorite pictures. Those first three years was so hard for me! And I know it took her so long to adjust. I had to manage, monthly doctors appointments, medications, meals, cleaning and entertainment! She didn’t always get along with my husband either.
The end result was…. my sister taking out all her money and making decisions on how much each of us got along with, how much she spent on my moms repast. I’m the oldest and my mom trusted me to help her with her banking. She had a Will that I ended up putting through probate. My sister, did a 360 turn and brought up every hurt she had ever felt and turned it all on me and some on my brother. She has called my husbands family member to try and turn them against me. She has said hurtful things about my husband and when she found out I got a lawyer for private she left me horrible messages. We did have some hard times but I confided in my sister and though even with me being upset with what my mom didn’t like or was confused about, my sister and I could work it out knowing we would always do the right thing for our mom.
Now here’s my question. By law, I have to distribute my mom's assets. Jewelry to be exact. She moved to Texas with very little and my sister took over cleaning out her house and getting rid of what she felt needed to go. My mom gave her house to my sister's daughter. Two years ago, my mom wrote out who she wanted her jewelry and special nicknacks to go to. One of her rings she willed to me but my sister wants it. What should I do? Send it to her? Or keep it? My mom felt she doesn’t deserve it but I now know my mom never told her she was giving it to me. What should I do?😢