hey justin,
did you manage to put them together? this probably won't help but mine could not wait to be reunited and they were separated for nearly 8 weeks because of chinchi's surgery.
i would maybe suggest you could try to have them meet outside of the cage without the babies so she doesn't feel like she needs to protect the babies, then stick the dad in with the babies while mum is still out - this way she'll be able to see there's no need for her to protect them. you could swap toys & hammocks between the cages & if they have any fur slips you could swap bits of fur, you know, stuff you'd do if you were introducing two new chis.
good luck!