Go to her house between the hours of 3-4 P.M. If you let her groom the same one 8 or 5 times she'll give you Blue's phone #.
Sources: myself
Chat with our AI personalities
Every day from 3pm-4pm, Daisy will massage your Pokemon once daily.
She is in the house behind prof oak's lab in pallet town.
There is no best Pokemon on Pokemon HeartGold.
there is no Pokemon Mansion in Heartgold.
They are not in Pokemon HeartGold