More people will catch your questions if you post in the "Beginner Discussion" forum which is under the heading "Orchid Discussion".
Anyways...
I'm sorry to read that your son passed away. I'm sure this plant means a lot to you.
While people here will attempt to help you, there will be no guarantees that this particular plant will make it. It really depends on the state of condition the plant is currently in.
A picture of your plant would be very helpful. It cuts to the chase and gets things done faster.
Obviously you know that your plant is a complex man-made hybrid of Phalaenopsis.
Let's give you a little background on where Phalaenopsis
really come from other than the local nursery or garden center (I'm referring to their wild habitat).
The
evergreen Phals grow as epiphytes on wet tree trunks or branches that have little to no live moss on them, hailing from many regions of the lowland to midland tropical swamp forests of Asia. A few countries of origin are the Philippines, Taiwan, Malaysia, Thailand, and Indonesia.
What this all means is you should be reproducing the following type of environment as best as you can:
1. Fool the plant into "believing" it's growing on a wet tree trunk with no moss on it.
Since we can't grow the plants exactly like how they are in the wild, there are a few tricks of the trade.
In your situation, since you're in AZ, I'm assuming that there are times when it can be very hot and arid (the air is dry and not very humid). Therefore, I recommend looking into semi-hydroponic culture.
First Rays' "Semi-Hydroponic - TM" Culture
2. Temperatures should ideally be 60 F to 90 F.
This temperature range is good for day and night temperatures pretty much all year long.
The day temperatures should be higher than the night temperatures.
In the wild they only experience warmth during our spring and summer, and cooler temperatures during our fall and winter.
They should not be grown any cooler than 60 F.
3. Phals can tolerate a range of relative humidity from 60% to 100%. As long as the humidity is within range you should be fine.
4. Phals have "green roots" that are exposed to the air.
What this means is that proper gas exchange should be provided for the roots.
It also means the roots are able to photosynthisize.
5. Phals grow horizontally not upright in the wild.
This allows the rainwater to dribble out and away from the center (crown) of the plant, thus preventing problems like crown rot.
If they're grown upright, you run the risk of water getting trapped in the crown and rotting the plant out.
Plus, if you try to grow it upright the plant will over time lean and direct itself towards the source of the light anyways.
6. They like to be consistently moist.
Here's a link to what Phals look like in the wild, it also shows you the habitat. I highly recommend that you take the time to peruse through these photos. They're not mine. They belong to someone on Flickr who goes by the screen name of Sarawak Lens.
Phalaenopsis in situ - Flickr: Search
Dealing with your specific plant, unless there's a picture of your plant. I don't know what else to advise you on, other than check the roots of your plant.
Here's an example of what a healthy root looks like:
http://4.bp.blogspot.com/_weS4Ql_H6w.../s400/Root.JPG
Notice the whitish green main body of the root and the green tip. That's a living root.
One last thing...
Since your orchid is a complex man-made hybrid, chances are there are many of these cloned in a laboratory. If you lose this one, I'm sure another one will pop up, especially if you have the tag and can find the supplier.
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