If you want her to reach a better weight feed her smaller meals more often, not larger meals less often
That's my approach to feeding up females and it worked wonders this past season.
Agree...that first large rat you get her to take may put her off feed for the rest of the year... I've tried bumping up prey size in the past and it always seems to backfire...
Lucifer Sam, Siam cat...
Always sitting by your side,
Always by your side...
That cat's something I can't explain...