"all the thorns, that is, every regret"

Can you replace an "all" phrase with an "every" phrase and use both in the same sentence? Is it alright to say:

She had removed all the thorns from his heart, that is, every regret of the past, and he could not forget that.

To say "all the regrets" instead of "every regret" would sound repetitive, wouldn't it?

• She had made him forget every failure, and all his long-simmering regrets.
• She had made him forget all his regrets, each and every disappointment that had ever tormented him.

These sentences show that the all and every (and maybe even each) phrases are sufficiently similar in meaning to be used as you have used them, although of course linguists would point out that they are not semantically identical.

For your sentence, I prefer

• She had removed the thorns from his heart, his every past regret, and he could not forget it.

But this is just a stylistic change. "Thorns in the heart" is not a common idiom, and it sounds a bit strange to me, though the sense is clear.