Egg trouble ......wna help!!?

ma pet parrot himalayan parakeet female lives wid male himalyan parakeet.......bt the male is much smaller thn the female,.....bt they do make luv......n d female hs laid 2 eggs b4ore bt she left d eggg n the male was sitting on it.......both the eggs broke...........yesterday nly she laid 1 mre egg n again d female left n the male was sitting on it.......afterwrds..the female sat on the eggg n deliberately broke it....bt the probs iz tat the female iz vry weak nnn laying eggs so frequently n giving her nutrition to the egg is harmful to her........so iz the egg fertile or infertile.....will she lay mre........iz it posssible to lay eggs wen the male mate iz much smaller than d female??????