[Elsie]

How is "the Roman church" implicated in any way?

IF one reads the text one finds:

Her enthusiastic witness drew the attention of the priests who warned her husband about her "sedition."

[Campion]

Doesn’t matter in view of the chronology. High-church Anglicans call their ministers “priests” to this day, you know.

[Campion]

Another bit of information: Anne was born in 1521. She married sometime after she turned 15, which would have been in 1536, two years after the Act of Supremacy. The "priests who warned her husband" would have had to have done so sometime after that.

To give you an idea how King Henry treated actual Catholics during this time period, I suggest you read this.