Time

"So, how was your talk with Monica?" Fily asked the moment Petunia finally came back to them with a huge smile on her face.

This time, Venedette was the one talking to Monica now, probably about her family and how she had been all this time. 

And although they were close to leaving and never seeing Monica ever again, the big smile on Petunia's face says otherwise.

"What happened? Why are you smiling like that?" Fily said with a teasing smile to Petunia which made her blush even more.

"N-Nothing! We just talked about funny stuff, that's all," Petunia said and turned Fily around so that she could hide behind her.

Seeing this of course made Gem feel a bitter taste in her mouth, but thinking about how Petunia was attached to Monica and this could be the last time they'll be seeing each other, Gem just chose to keep her thoughts to herself and not be selfish about the situation.