The Fallen Lady Returns

Biggest difference is one is a merchant daughter and the other is fighting to be an imperial physician
Short dramas
Revenge story
Strong and smart FL. Very rarely need help and if they do they'll ask
Getting revenge for their family
ML falls for FL quickly.
ML never hinders plans, only acts as support or plan B
Waits till revenge is done to solidify relationship
Both have royal titles

Both FL were brutally killed, reincarnated and got their revenge against their (ex) husbands and the imperial courts.

Both are historical mini dramas in which the FL is murdered by her husband/the man she loves, and she is then reborn. She allies herself from a man in order to get revenge, and the two fall in love along the way.

Both are historical dramas in which the FL is murdered by her husband/the man she loves, and she is then reborn. She allies herself from a man in order to get revenge, and the two fall in love along the way.

Both are historical dramas in which the FL is murdered by her husband, the husbands in both dramas have a side-squeeze from the imperial family. The FL allies herself with a man in order to get revenge/justice, and the two fall in love along the way.

In both dramas, the main girls go all-in on getting payback against the people who hurt them. A brave prince helps the FL with her revenge.

In both dramas, the main theme is the heroine’s revenge for the wrongs she has suffered. Both female characters are intelligent, meticulously plan their retaliation, and show ruthless determination in carrying it out.

Both Bloom Once More and The Fallen Lade returns have -:
1) Betrayed FL dying and wishing for another chance for revenge
2) Reincarnation of FL back to her life with memories intact
3) Revenge (TFLR has delicious revenge arcs)
4) Short length series
5) Costume Drama
6) Chemistry

In both dramas, there is a theme of rebirth and gaining another chance to change one's life. The main heroine, with the help of a devoted man, mercilessly takes revenge on her oppressors, delivers justice, and transforms her fate.