A grey tree frog was in a potted plant we brought in from outside. Keeping her for the winter but a member here told me I should not release her in spring. She is a species native to my area, so I don't understand why it could hurt the frog population or introduce disease like they said but I want to make sure I make the right choice. I've had her for 4 weeks now.

Here she is btw ( does she look healthy? )
Name: IMG_20190205_142324388.jpg Views: 164 Size: 5.58 MB
Name: IMG_20190205_142914742.jpg Views: 195 Size: 6.10 MB