leaves curling. and loosing color.

Hey this plant looking a little sick(attached photo) is this a deficiency of some sort? 7 out of 8 look healthy except for this little gal. Soil also is waterlogged pretty bad. We had non stop rain here for a couple weeks. Its been transplanted since a couple weeks ago. And has not grown at all. Her sisters are up to my waist and she still 6 to 9 Inches tall. Imgoing totry and get ahold of a ph tester

Also an outdoor grower. Had same issues, will come back. Carry on with regular routine with nutrients & tlc. Peace