When my dad died he donated his body to the U of Mn. At the time, my mom directed them to NOT contact her when they were finished, she did not want his ashes returned because she did not want to go through it twice. So there is that option.
I had a hard time grieving, and through loving discussions with my family, we changed our minds. This was about a year later. We were lucky in that they still had him. A couple of months later they returned his ashes to us and we had a small burial ceremony with our minister and immediate family. It was necessary for me, and made all the difference in the world to me, but was very hard on my brother.
My mother was just diagnosed stage 4 NSCLC (AC) with mets to adrenal glands and brain. She has long been set up to donate her body to the U as well, but has told us that we do not have to do that, if it is too hard on us to go through it twice.
I will honor my brother if he wants to skip it. But personally I would not be against it as long as we get her back.
The thing is that the med schools really really need these donations. It's an incredibly selfless act. If you go ahead with it, and decide to NOT have her ashes returned, they will not tell you where her eventual resting place is, at least that is how the U of Mn handled it back in the early 90s. We were lucky in our timing.
Not an easy decision for anyone involved.
I'll be praying for you and your mom.
Liz