Trying to remember the whole one step at a time mantra

Oh FFS Nadi how awful for you. I really hope surgery can help a little.
As to her2 and bowel cancer risk.
No...I've heard nothing specific to her2.
But if you have a specific gene (i cant recall which but not brac or 2) you have an increased risk of bowel and pancreatic cancer. There is one with soft tissue cancers. All the mutations mean are increased risk, not which type.

This link is helpful...if it doesn't freak you out.

https://www.breastcancer.org/risk/factors/genetics