My sympathies, it is always sad to hear about a situation like this.
I too have considered donating hardware to museums in the past, but personally I have decided against it. The problem with donating to an institution, IMO, is that your hardware will probably never be displayed (for example in some place like the CHM), and it will certainly never be run, used, or enjoyed again. I have been to the CHM several times in the last few years, and I'm always a little disappointed in the 80's home computer section. IIRC, they don't even have a 99/4A on display. If you donate to a place like the CHM, it is almost certain your computer will be put in a box in storage and never be seen again.
For more than 15 years, we have operated Midwest Gaming Classic on the model of "get everything out of storage for one big event where everything is hands-on."
Nominally, our storage bins say "Electronic Gaming Museum" but any plans to make that a permanent physical building were long ago abandoned.
Instead, we get up to 17,000 people in one festival (the weather took its toll last year) and the wonderful families where multiple generations get to share playing games their folks remember.
"Hey! You have my dad's favorite game on disk! Can I take it to him so he will come over?"
People trying to draw with Super Sketch.
One time repeat visitor: "Can you give me another TI BASIC lesson?"
Hardcore gamers attempting TI Invaders.
Academic wondering at the TMS9918 minor dazzlements: "They thought of layering sprite planes and graphics back then?".
Twice, original designers of TMS9980 and 32C020 microprocessors.
Habitually, TE2 speech jokers making the computer say juvenile things.
Scott Adams opining on TI's business decisions (he had ignored all things 4A until our show)
New combinations.. CF7+ on a 99/4, all the newest gadgets on 4A
Impromptu Munch Man world championship (somebody walked up, got to level 20, attracted crowds)
These are some reasons why I do this.