It was difficult to tell, honestly. Mara was strong in the Force, so perhaps it was some combination of both the muted connection and her own doing. Nevertheless, Mara wanted to get her connection to the Force back to where it should be.

Or, better yet, be sent back to where she belonged so she could finish her work and tell Palpatine that she hadn't actually killed Dequc.

"I have never seen it nor have I heard tales of what it looked like. But I had been curious as to what it did look like before the Empire came to power." Mara was pointedly using past tense, which could be a clue, but she also wasn't outright stating that the Jedi Temple had been attacked and made into a ruin, at best.