Is it true that the real reason for Nikki Haley's resignation was she supported Ford and did not like Kavanaugh's appointment to SCOTUS?

That is what democrats are saying.

But is there any truth to this?

Did she hint at why she resigned?

Probably not. She certainly did not say this AT ALL and she has publicly voiced disagreement with Trump in the past.

I'm hoping we're withdrawing from the UN and we have no need for an ambassador.

Maybe she is having Trump's "love child"

Then why wouldn't she have resigned weeks ago when all this came out?

I doubt that is the reason.
What Democrats have said that? I haven't seen any. Got a credible source?

My current guess:

She is taking some time out prior to her presidential run in 2020. Best if you do not make any political mistakes that the electorate might remember at election time.

Many in the UN may suffer when the Deep State arrests start happening so she wants to be well out of the way when that happens.

Interesting that she resigns a few days after being notified she is under investigation for acceptance of questionable 'free' travel.

Nope.

She, like the rest of Trump's administration, is under investigation for ethics violation.

I find it unbelievable that anybody can't see Chump for the politically inept fool that he is.