Parakeets usually lay eggs every other day after the first egg is produced so she will probably lay more.6 is the usual clutch size although this can vary.The eggs should be white.
Obviously not all will be fertile if any but if they are they will hatch the same way they were laid i.e one every other day.
If the first egg is fertile it will hatch after about 18 days after incubating.This means 18 days after she sits on the eggs all the time.
I would leave them be and keep a note of dates in your calendar and see if anything happens in that time.I would personally not interfere with them.
If after 20 odd days nothing has happened the female should leave the nest and it is safe to remove the eggs.
Hope that helps a bit.

__________________