And anyhow I'd always be too tired at night to bother saying prayers.

People who have to look after twins can't be expected to say their prayers.

Now, do you honestly think they can ?" Marilla decided that Anne's religious training must be begun at once.
Plainly there was no time to be lost.
"You must say your prayers while you are under my roof, Anne." "Why, of course, if you want me to," assented Anne cheerfully.

"I'd do anything to oblige you.

But you'll have to tell me what to say for this once.