Netflix isn't in the habit of extending limited series beyond their natural life (we'd have a second season of "The Queen's Gambit" by now if it were), but that doesn't mean there isn't enough material for another season of "Maid." At the end of Season 1, Sean (Nick Robinson) agrees to stop fighting Alex (Margaret Qualley) for shared custody of Maddy (Rylea Nevaeh Whittet) so he can focus on getting sober. Doing this allows Alex to finally leave Washington and attend college in Missoula, Montana, just like she'd always dreamed of doing. Although Alex's mom, Paula (Andie MacDowell) — herself still a work in progress herself — said she would accompany her daughter and granddaughter to their new destination, she decides to stay behind with her new boyfriend. And so, as one generation breaks a harmful cycle that has kept them trapped in toxic patterns, another generation clings to it.
If "Maid" did return for Season 2 and chose to follow the same cast of characters, we could check in on Alex and Maddy in their new life as the young mom juggles parenting with putting herself through college. Also, in the Season 1 finale, Sean tells Alex he will visit once he gets his life together and is sober, which means an appearance from him wouldn't be out of the question.
There is definitely a sense of finality to Season 1, but it's more because "Maid" has simply reached the conclusion of one chapter of Alex's life and is opening up a new one. Which is to say, there's a lot more story that future seasons can explore.