Try automatic writing. Sit in a quiet place with a pen and paper and thik about her. Then just start to write, even if at first it doesn't make sense or seem relevant to her just keep writing, if she is trying to get a message to you, this is an easy way for her to communicate.

Possibly, you are just so overwhelmed by her greusome death that you can't stop think of her?? Which is common, even if you never knew her. It could be bringing up events from a past life of your own.

Good Luck,
Libra