When Fëanáro is feeling sociable she hangs out with him. He finishes his novel. (In it, the school turns him over to social workers and adopt him out, he escapes his foster family, he encounters a dragon and talks his way past it with stories about Arda, he studies wizardry and is unreasonably effective at it, when the dragon opens a portal to Arda he sneaks through too and the Valar slay the dragon, he fixes his mother with magic, and then he masters planar travel himself and conquers Bella's plane.) He finishes his typewriter, too; Bella's of the opinion that it would have been easier if he made vowels separate instead of consonant-hats, but it works okay like so. She acquires one when there is more than one, and learns to type, because crystal balls are a long time coming.
She has made some progress, though. She finds the common thread in dud combinations that produced an aura, and successfully decomposes all her original spells into pieces and begins to make new combinations. Most of these are trivial like the increased character limit arcane mark. Reverse-engineering her undead-damaging spell, though, gets her (small) arcane healing well in advance of when she was expecting to have that down. So anybody who lives on her block and cuts themselves cooking breakfast can knock on her door - or that of anybody who's getting the spells as she turns them out - and get that seen to without bothering a Maia.
Once a month she sees Miriel. Bella doesn't have any ideas that land any better than "forget you forgot something". But forgetting the contents of that foolish, foolish oath is at least a holding pattern that lets Miriel pretty much live her life, so, therapeutic success? ...Bella makes sure to remind Fëanáro that he is very adorable and lovable and adored and loved.
"They think if they get popular everyone will need one even if they don't want one just to keep up."
"They said they let me keep mine because I was the only distressed one but I think he's more distressed than me. I don't know if anyone else will miss them that much. I guess everybody else who had one is an adult and can move to Tol Eressëa if they want."
"...He was in a hurry to cram things into as little time as possible before. He didn't know what was stopping him. Then he found out."
" - Thank you." If she can figure out how to tell Finwë what he is doing wrong as well as she can with Fëanáro that will be a major help.
She goes back to Fëanáro and works. She can't think of a reason Valar wouldn't want crystal balls in Valinor. She can bring up Improved Coping Mechanisms and the loom when Fëanáro's not mid-work-fugue.
"Don't take a boat." She offers him the necklace. "Your father says you really freaked out when your necklace broke. I knew it would upset you but it sounded very bad."
"Oh no. No, I'm still here." Hug. "But I heard you were banging your head on walls and screaming at people."
"What would you have wanted them to say? Besides that they'd let you go out, that one's obvious."
"Unfortunately," she said, "no one in the conversation decided to address somebody else being scared instead of themselves."