Aggresssive pregnant rabbit

My rabbit is pregnant and is due next week, but she is very aggressive and she won't even let me touch her. She was this way even before pregnancy. How can I put vanilla on her nose to check on the kits if she won't let me touch her? Please help.

Also, if one of the kits has a sunken stomach, how can I "foster" it?

Thank you in advance for your help.