Probably. Livebearers are notoriously prolific, and some species can have multiple back-to-back pregnancies without needing to breed again. Do you have plans for what to do with an exponentially increasing population?
She seems pregnant, but not too close to giving birth. Just a quick info: Mollies will breed very quickly, and the females can store sperm, so I would be cautious of whether you are going to keep the fry; you will need more tanks.