1) in notice of intended marriage signature of both bride and bridegroom is necessary
2)you can send the documents to her and she can sign it in Germany have the signature attested before indian consulate and then return documents to you
3) you dont need a lawyer .
4) the following documents are required for both the partners:
a valid Passport
original Birth Certificate showing parents' names
if the person concerned is widowed, the original death certificate of the deceased spouse
If divorced, copy of the final decree
documentary evidence regarding stay in India of the parties for more than 30 days (ration card or report from the concerned SHO)
5) After the stipulated waiting period of 30 days the marriage can take place in India. Under the Special Marriage Act, 1954 a certificate showing the signatures of the persons married, the registrar and the witnesses will be issued. This Certificate is required as proof of the marriage and when applying for a visa to for a foreign country.