Sorry you are grieving.
You can bring her energy with you through life. When you sit quietly to meditate ask to feel her energy. She will come, you might not hear or see her but you will likely feel a familiar energy, generally it's how they made you feel in life, like your energy is partially intertwined with there's.
Also I didn't know her but if she was that sweet I feel safe assuming she would very much not want you to suffer or feel guilt.