If I thought it wasn’t ok for her to mention this, I wouldn’t have posted it.
It is simply my opinion (which is worth exactly what was paid for it) that actively putting Palin on the campaign trail would be counterproductive to attracting mushy middle voters. The ‘crawl over broken glass to vote for Trump’ voters don’t need to be convinced to vote for Trump.
She was a supporter of Trump in 2016 but that didn’t translate into any position so I assume that she’ll mostly remain on the sidelines.