I'm fine with either as either ultimately is from God. The angel would just be serving our God. Now there is support that our Comforter provides that an angel is not equipped to but that's not the topic of this thread.
But you see......how would we know that a spirit is from God?
Most believers just do not know or understand the works of Satan and his demons.
2 Corth. 11:14-15..........
"And no wonder! For Satan himself transforms himself into an angel of light. 15 Therefore it is no great thing if his ministers also transform themselves into ministers of righteousness, whose end will be according to their works."
It is so easy for all people, including Christians, to be taken in by image and outward appearances. Many will only recognize evil if it openly declares itself as evil. But this approach will end up embracing Satan himself, who transforms himself into an angel of light. If Satan were to appear before a human audience, they would be strongly tempted to worship him as a creature of almost divine beauty. He would be regarded as an angel of light.