It's not her call to make.
Yes it is.
Article II, Section 3, Clause 1
I just read the article and it doesn’t say Trump can deliver the State of the Union speech without permission.
Actually, you didn't read it very well, nor do you apparently know much about the SOTU historically.
While I agree that the President needs the permission of the House to speak in the House chamber, he does NOT need any permission from Pelosi or anyone else to deliver the SOTU. If you read something requiring him to get her permission in Article II, then you need a remedial English class.
Until the turn of the century or so, the SOTU was not a speech at all; it was a letter delivered to Congress. It became a speech delivered before the members of Congress because politicians are addicted to attention, spectacle, and pomposity.
Nancy herself suggested in her first letter than he could just go back to doing it that way, because she really, REALLY wants to deny him a public forum. If I were him, I wouldn't go along with anything she suggested, nor would I keep fighting with her over the House chamber, because it makes her look as though she is somehow equal to him in terms of government power and importance, and she isn't.
If I were in his place, I would find a place to give the speech which had just enough space for every member of Congress and each Supreme Court Justice (because they usually attend), and a few handpicked Trump guests. No more. Then I would issue invitations for members of Congress to come hear the speech in MY venue. Everyone knows how much both sides of the aisle LOVE the melodrama and show of the SOTU: the careful, pointed choice of guests, the chance for "reaction shots" on the news, the rebuttals afterwards. So I'd deny them the guests, and I'd put them in the weaker position of either being my guests on my sufferance, or staying home and letting the whole thing go on without them.
Then, a week later, just to make sure no one can say the requirements of Article II haven't been met, I would send a copy of my SOTU to every member of Congress . . . in the form of a DVD of me giving the speech despite them.
