If Frieza was not such a sadistic fighter and was intelligent enough to use LS to finish the fight he would win
Both have enough range to basically fight at any range unless Frieza decides to literally snipe from another planet, but he in the first place has no way to escape from Firefly reach so irrelevant
Frieza was able to fight a Genius combatant but he was constantly outsmarted in that fight, Firefly is also a genius, even if he is less proficient than Goku, Frieza can't detect Ki at this point (Or does the anime change this?)
And basically also Firefly with any hit she is doing, she is breaking his tougness bar and reducing his speed, plus the heat difference that Frieza can't survive (which makes this a stomp if you don't count that Frieza could be intelligent and do LS diff, but is your choice and I don't care what happens)
Massive, she was losing to the propagation bugs and with that she stomped a whole army of thousands to millions if I am not mistaken, but is impossible to quantify, so at best she is equal to Frieza by using thread rules, with the gap not even being x2, the Ap difference is non existant, also, she gains swords, so literally she can cut Frieza with ease like Trunks did+ heat= literally cutting butter
Edit: And if this is propagation SAM then she is summoning those bugs but that is basically Frieza vs metal cooler army so is impossible for him to do anything