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There is a chance that moles can grow back. I would recommend that you follow-up with your physician to review your pathology results.
Moles can re-grown and they are not necessarily dangerous. You should consult the dermatologist who removed the mole and find out what the biopsy report of the mole that had been removed. Based on that pathology report you should return to your treating physician to see if it is necessary to have it removed again.
Tissue expanders or serial excision can be performed to remove the congenital hairy nevus.  This should be a staged procedure with meticulous preoperative planning. 
A shave excision or surgical excision are both procedures I would offer for this non-pigmented epidermal lesion on your eyelid.
Lower eyelid pigmented nevi are common, but can also be a sign of something more severe. I would recommend a surgical biopsy of the mole done under local anesthesia.