First of all, I am so sorry about your situation and I am sending you lots of healing and positive thoughts from over here in NY.
I think finding someone to foster, or possibly hiring some help if you are able that could come over and walk your pup might be all the solution you need. I know this has got to be such a hard decision on your part <3
Maybe your hubby can find a new secretary.. I know that when I wasn't on meds anything with fur made me asthmatic and allergic and yucky so the secretary might truly be unable.
I really hope that everything works out for the best and that you can still hop on yt every now and then