"Who made me princess" (suddenly became a princess one day) is really good, although no brothers, the father is cold to basically anyone but his daughter. The art is the prettiest you'll have ever seen.
There's also "they say I was born a king's daughter" which is not as wholesome, just a heads up since she gets reincarnated into a very misogynistic world, but the brothers and father are really fond of her although they don't show it immediately.
Who Made Me Princess/Suddenly Became a Princess One Day
http://www.mangago.me/read-manga/daughter_of_the_emperor/?av=1
http://www.mangago.me/read-manga/they_say_i_was_born_a_king_s_daughter/
http://www.mangago.me/read-manga/i_am_a_child_of_this_house/
http://www.mangago.me/read-manga/the_archmage_s_daughter/
http://www.mangago.me/read-manga/i_was_born_as_the_demon_lord_s_daughter/
http://www.mangago.me/read-manga/the_evil_sorceress_plans_to_survive/
http://www.mangago.me/read-manga/a_queen_s_law_of_survival/
Not exactly mean andcrazy but...lady baby have these moments where everyone falls for how kawaii she is
I want to find another manhwa like the youngest princess where all the mean and crazy guys(aka father and brothers) fall for her and act all cute with her but mean to others!! preferably one with full color, THANK YOU ٩(๑❛ᴗ❛๑)۶
Ive read: the monster duchess and contracted princess, and lady baby