Hi from a ex-Deerfield bch resident. Sorry but I'm no help for play date any more.
She is at that awkward age where she's too big for the small dogs and not big enough for the big dogs. Dog parks can be a double edge sword, some here have had bad experiences with them.
Have you enrolled her in puppy classes? If not that's a good start just make sure you like the trainer and feel comfortable with the way they train.
Gracie - Yellow Lab - 10/23/2005
Maddie - Chessie - 3/6/2010
Pinks - Black Lab/Mix - Got ya 12/30/10
At the Bridge
Nozomi (Zoe) - BC/Lab - Got ya 9/5/2009 - 3/19/2015
Abbey - Yellow Lab - Got ya - 5/8/2009 - 4/22/11
Cheanna - Black Lab/Mix - Got ya 5/99 - 9/21/10
Buddy (Bubba) - Black Lab/Mix - Got ya 11/2/02 - 3/28/10
Amber - Yellow Lab/Dobi - Got ya 8/1989 - 5/15/01