Hello and thank you for your question.
I am sorry for your loss. As she had brain stem hemorrhage and was not due to the common causes like hypertension or trauma than she might have viral or bacterial infection.
Bacterial or viral infections can be a cause of bleeding into the brain stem. These conditions cause a buildup of blood in the intracranial space that can place strain on the blood vessels and brain tissue. The vessels can tear and bleed.
Please get back to me if you have any further questions. Thank you.
Thank you for the above reply.
I have a couple of follow up questions.
1. Over what time period would my mother have been likely to have had this bacterial infection to cause the bleed?
2.What symptoms if any would she have had during this period?
I have just replied to your email of 28th.