Shared strength
The changes in her body were the same with Lilith, Lilith's body was ready to transform while Cosmo's body was acting out because of them suppressing the phoenix, little did they know that Cosmo's body needed to merge with Lilith's in order to keep her under control.
"Damn it Lilith where are you?" Cosmo asked herself as she looked around but could not see the girl.
"Lilith" Cosmo called out and Lilith's eyes widened when she heard the girl calling out for she was swimming by the cliff where Rex was watching over her earlier.
'Cosmo" she called out as her body started glowing brightly in the water and Cosmo saw then sighed in relief and she flew to the cliff and saw the water was getting rough.
'The sea is not for swimming when rough" Cosmo said as she flew over the water and Lilith looked up at her then smiled.