you can wait forever they just won't they are not like pkmn only like pkmn can breed eg pikachu and pluse could breed because there like pkmn
depends on how many steps you take
Not long mybe 500-2000 steps. Depends on the egg.
a week
Not very long. Actually it's short
Usually 5 to 10 minutes
You only need a Rock and/or a Fighting Pokemon. The Rock Pokemon can take everything her Pokemon throws at it as long as it's about the same level as them. A fighting Pokemon is a more offensive choice, but it should have a good fighting move so the rollout attack doesn't get to build itself up. (I did it with my Geodude, Quilava, Pidgeotto, Hoppip and Flaafy. All lower level than her Milktank)
I take it Rosemy is a Bayleef. You need to use a Rock/Ground type such as Geodude (avaliable in Union Cave) as access to Water Pokemon is limited without a Rod.
long because i traded and it took ages
depends on how many steps you take
it counts what kind of Pokemon it is
It is pretty tough, but it helps to have a Geodude or an Onix. They can take most of the attacks without fainting. Making her Pokemon Sleep or paralyzing helps a lot too. A fighting Pokemon is a good idea if you want to be offensive, I think Machop is the only one available at that stage in the game.
Not long mybe 500-2000 steps. Depends on the egg.
you have to take 2500 steps or less depending on what Pokemon it is :'( ;P :P
a week
Not long. Just migrate the Pokemon and then go to pal park. Then you enter the catching competition and you catch your migrated Pokemon.
Depends on the Pokemon inside the egg.
1 hour