She's trying to stress us out and saying that she's going to hire a inspector now.

I stressed legal because many duplexes had been illegally converted as one of my duplexes, with an illegal basement apartment added.Problem with an illegal conversion is that if the authorities find out, they demand it be removed.

It's easy to create yourself another stressful 80hr work week where you are earning significantly less per hour than you can in your professional career. 

That's a safety net, that rental can be empty for a month or two and you are not stressing how to pay the mortgage.Get yourself to a safety net you can be comfortable with.

If you can handle the stress of feeling overwhelmed, but pushing through then you will succeed!

,We have/had a few gripes with the home, but again, I will stress, we've lived her five years and have a sentimental connection to the house, so I maintain my belief that modular homes are a decent investment.

He stressed that our social security numbers and any sensitive info would be blacked out prior to sending the info on.

Grandma could probably use the money but with covid it is worth quite a bit more than usual to have a stress free family transaction.  

Thanks Ari and James for your input..Looks like all cash is little profit, but no stress, and you own the property free and clear, as well as can sell it for 100% profit..

Okay, the timing sucks, but for $5k (you're not "losing" the $10k from the higher offer, since you don't have it to lose) you're creating way more stress than it's worth, @Alex Kovalenko.