It does. But she should have been more sensitive to the fact that young people don't know old sayings. And you can't really expect them to know that hung is not the proper spelling for what they are being so offended.
Hmmmmm. Quick Google. Nothing to be offended by (unless maybe looking for a made up reason to be offended?).
Below is the meaning of
hang, or hung, out to dry from various sources. Every source found was in agreement as to origin and usage.
I don’t know what all is under discussion, but that expression is innocuous. So, in simple terms and stated in all one syllable words where possible:
that.term.relates.to.drying.clothes Long read below,
@ReadR00ster, but I thought you might find it interesting. Could have copied lots more, but, as previously stated, there was universal agreement as to the expression.
Writingexplained.org
“This expression originated around the 1960s. The exact origin is unclear. However, most sources believe it might have come from hanging clothes on a line to dry.
This was around the time automatic washers and dryers were becoming popular with the public. Those without an automatic dryer would hang their clothes on a line outside to allow them to air dry.
It is possible that the
idiom developed because clothes left to air dry were abandoned to the elements. They might get damaged by wind or dirt. People left out to dry also were abandoned to their fates.”
Idioms.thefreedictionery.com
“
hang someone out to dry
leave someone in a difficult or vulnerable situation.
informal
The image here is of hanging wet washing on a clothes line to dry. The idea of ‘flapping uselessly orineffectually’ like clothes drying in the wind is also behind the cricketing metaphor
hanging your bat outto dry , which dates from the late 19th century and means ‘holding your bat away from your body at anineffectual angle’.
1998 Spectator We point out that another MP…has been hung out to dry for failing to declare whatwas (relative to this) a minuscule interest.
See also:
dry,
hang,
out,
someone
Urban Dictionary
“
hung out to dry
When you've been left alone
to face a situation - especially a dangerous or unpleasant situation - the people who just abandoned you have
hung you out to dry. Also known as "
Hung Up to Dry."
1. Right before the company went
bankrupt,
the CEO sold all of his
stock, thereby leaving everyone else there hung out to dry.”
Knowyourphrase.com
“
The Origin Of ‘Hung Out To Dry’
The origin of this phrase probably comes from a certain method some people use to dry their clothes after they’ve been washed—they hang them up outside to dry.
If you own an electric washer and dryer, then washing your clothes is a chore that’s pretty easy to do. On the other hand, folding your clothes afterwards, yeah that’s still annoying.Anyways, not everyone can afford these convenient clothes cleaning machines. They can be quite expensive, after all.
So what do some people do instead after having washed their clothes? Well, they pull out a hair dryer and… I’m kidding. Jokes aside, they hang their wet clothes up on a line outside and then they wait. All the drying work is handled by the sun and the air, a strong combination that will rid those clothes of moisture in no time. Although this method can be quite effective at drying clothes, it doesn’t work as well in the colder season. Another benefit of drying clothes in this manner is that since no electricity is being used in the process, this in turn saves a person some money on their monthly electricity bill. Neat!
So that’s where this saying likely comes from—people hanging their wet clothes up to dry.Now, let’s talk about when this expression started to take on its ‘to be abandoned’ meaning.The earliest I could find it in print where it’s likened to ‘abandonment’ is the year 1980. This example comes from a newspaper called Filmnews, 1980. There’s a part from it that reads:
“They would be rather explicit, because they were quite angry because it was like being abandoned like being hung out to dry.”
Idioms.thefreedictionery.com
“
hang out to dry
Also found in:
Dictionary,
Thesaurus,
Medical,
Legal,
Encyclopedia.
Related to hang out to dry:
hang around,
hang in the balance,
hung around,
Hanging in the air”
En.m.wiktionery
“Verb
hang out to dry (third-person singular simple present
hangs out to dry, present participle
hanging out to dry, simple past and past participle
hung out to dry)
- Used other than with a figurative or idiomatic meaning: see hang, out, dry.
- (transitive, idiomatic) To abandon someone who is in need or in danger, especially a colleague or one dependent.
Usage notesEdit
- Often carries an element of betrayal of someone who might have expected protection or assistance.
TranslationsEdit
[show ▼]abandon someone in need”
You’re whitesplaining it away and I’m not. Nothing more needs to be said. 
Lots to be said for accounting and law vs history (other than being able to earn a living!
