This is why I'm not entirely sure what OP hopes to gain by prolonging the inevitable.
If she doesn't pick up the certified mail, he's going to do it via substituted service and if she still won't do anything, he's going to get everything he wants by default.
Avoiding service is rarely a good idea.
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No, you're just not really understanding the service issue.
Again I'm still not sure why you want to avoid service - it's going to happen whether you like it or not.

