I’ve played this game for a hell of a long time with many many different people, and nobody seems to pick Marie Lambeau.
Maybe she’s not designed for multiplayer; the risk/reward ratio for her as much different. Solo, risking an extra doom might lose your three actions to gain an additional one every turn; in a group, The trade-off is one action for 12.
It’s also because there’s not a lot of cards that let you manipulate doom; Arcane initiate, Alyssa Graham, David Renfield, blood pact, and De Vermis Mysteriis. With the latter, you get tons of event compression; one action from the book turns into two.
She’s also a 4/4/1/3 Mystic with a tremendous weakness. She loses an ally slot, and amplifies damage for several turns while adding doom to the board.
Still, with access to spells instead of Mystic cards specifically, she gets some oddities from other classes. Blood eclipse or arcane insight, feed the mind for card draw, Alter fate and suggestion, but as of press time, there are 18 non-mystic spells in the game out of almost 100 spell cards.
The only place Marie might fit is in dream eaters a, where doom totals can reach the double digits without advancing the agenda. Perhaps with more doom cards, but even after six expansions, Marie is still best as a solo act.