I'm not totally sure of everything you're trying to ask but I think I can grasp some of it.

Female Pokemon would generally have weaker Hidden Power than males, and this difference gets more apparent with gender ratios. For example, for most Pokemon it's 50M/50F and a female could have an Atk DV of at most 7, but for the starters it's 87.5M/12.5F and in thise case you'd have it with an Atk DV of at most 1.

For female-only Pokemon such as Blissey it wouldn't matter, since even if her Atk DV is 15 she'll still be female. (This applies to any Pokemon in Gen 2 that is always one gender - or always no gender.)

So, simple answer: It gets better for female Hidden Power the more the gender is weighted towards that Pokemon being female, e.g. Ninetales or Blissey. But unless it's a female-only species, I don't think you'll be able to get a female with a 70 Hidden Power.

Yes I understood, but is impossible that a Female Poke has a Dark type of Hidden Power?
Talking of cheats, when Change the type of Hidden Power code, ever the Pokemon will be male, but I want a Female pokemon
if I changed the gender to convert my pokemon to female (01ED3FDA) she will always have Steel Hidden Power, because this code (01ED3FDA) will convert the Hidden Power to Steel, but is too convert my Poke to female. Well I want that my Female Poke have a different Hidden power not steel.

Well, Idont know if you understand me

I assume it would be possible, since I think the Hidden Power goes "backward" by 1 type for each DV you go down by.

It would just be impossible to have a Dark 70BP Hidden Power. Dark with lower BP would be possible, I'd think.