congrats!
She is about ready to pop out some babies! I would put whatever plan you have for the fry (babies) into actions.
your options
Breeder net in main tank and put her in it,
lots of plants in the main tank especially floating ones and whoever lives, well lives
wait, watch and scoop. The last is hard if you work or have school, I did that wait, watch and scoop, and I had lots of floating Anacharis at the time. I managed to save 2 fry. and they are very happy in their own tank growing to non eat me size. What else do you have in your tank?