Elain ‘has done nothing of note’ Archeron -
When Feyre returns in ACOTAR, throws a ball on her behalf in order to help Feyre re-enter society - considering as far as Elain believes, Feyre has simply been caring for a sick relative.
States that she’d like to grow a small vegetable garden if she can learn enough about it - adding to the idea that yes, none of the Archerons could grow fruit or vegetables at that time.
When Feyre returns in ACOMAF, it is Elain who not only convinces Nesta to let Feyre & co use the house as a meeting point, but also acknowledges all Feyre did and expresses remorse for not helping her.
Makes sure to send all the household staff away when they meet with Feyre & co for the first time.
Attempts to make polite conversation to diffuse the tension at the dinner table.
Just before she is placed in the cauldron to be made, she shouts out to Feyre a warning that Tamlin is trying to make a grab for her.
Once she’s aware of her visions, she explains what she’s seen - thus leading to L*cien finding Vassa, who was vital in winning the war.
Goes to visit Greysen to beg him to take in the humans. To her own detriment. Knowing that it would not end well.
Helps Feyre by finding the Suriel.
upon their escape from Hyberns camp, she screams at Briar to grab on to Azriel if she wants to live and help secure her
Kicks the beasts off of Azriel as they’re attempting to escape.
Stabs the motherfucking King of Hybern through the neck just as he’s about to kill Nesta & Cassian.
Helps Nuala & Cerridwen with, at least, the cooking in Feyre & Rhys’ household.
Helps elderly citizens of Velaris with their gardens.
Offers to help scry for the DT - that she is denied this opportunity is because it’s Nestas book, so why on earth would Elain do something like that when Nesta is the focus?
Honestly, that’s just stuff off the top of my head. But yeah sure. She’s done nothing 😆