<human>: Can you condense the text into a few key points?

I'll skip details to make this short.  My aunt was a super-sentimental person to me my whole life.  No one knows this personal aspect but me and her.  She died unexpectedly yesterday.

I was planning on writing a special note inside the last birthday card she sent to me and secretively (well, just not ceremoniously, just privately) putting it into her casket at her funeral.  I just need that for me to grieve.

I just found out she is being cremated.  So plan A is out of the question.

Any ideas for something special like the original sentiment?  I do believe she knows my heart, but I just feel like a human act is needed since I haven't been able to physically see her in years.
<bot>: I was planning on slipping a note filled with my heart felt sentiments into her coffin, but just found out she's being cremated.  Any ideas for something similar?