Devin was still fast asleep when Angeal regained her strength to stand up. She cannot believe what happened and did not understand how she should actually be reacting from what she saw.
The chalice was already filled with the wine that they needed to counter the Bacchus' Wine that was planted in the cellar which caused Devin to yearn for souls.
Angeal would have jumped out of happiness when she saw the chalice of wine filled. However, she has to move fast and take it so that she can make Devin drink it immediately.
She was already ready to stand up but the memories of what happened between them suddenly flashed through her mind when she saw the chains on the floor. This made her blush that she looked like a tomato already.