Here is something from Brandon Osborne that may help you.
I guess there are a few things to consider first.
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Do you need to pair her?
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Will you get anything from pairing her that will push your plans forward?
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Can you house and/or sell the babies when they come.
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Do you think she is ready to go again?.. Only you will know.
I will say you must be doing something right to get her back up to that size again