Pregnant molly, opinions on how long left?

[Ursi]

This female Molly is in my opinion preg, she today is staying close to heaters and plants and thought id try my luck at seeing if I can get her to have the fry in a breeder, thing is as its a floating one I don't want to leave her in there unless she is close, can anyone advise how much longer she may have left? She looks huge today!

















Thanks for any replies if anyone thinks she may not be ready I will put her back in the main tank, I don't want to stress her more than needed.