I lost my sex drive for about two and a half years after both babies. I felt really guilty. My husband however couldn't be more supportive, understanding and patient. Because he has been so supportive it has made us closer than ever. I trust him more now than I ever did.
My sex drive normally is very high, dirty and adventurous, just not after having babies.
It's not just hormones, it's also a huge mind boggling and exhausting thing to have and look after a baby/toddler.
For you I would advise you fully immerse yourself in her world and her feelings so you share what she is experiencing. Believe me this is worth doing. Support her and help her rest as much as you can. For the natural urges you can't help having I suggest you aquaint yourself with your hand, some porn, and maybe a male masturbator (although my husband didn't fancy the latter). Make sure she constantly knows that you still desire her and fancy her, but never ever by putting any pressure on her. Just by being nice and flattering. Still be physical with her by giving cuddles. If she fancies more she will show you.
I think I may be unusual in the length of time I lose my sex drive, but I also think our experience shows that this can be a strengthening and positive thing in a relationship rather than negative. Our relationship is stronger for being shown that we can be very close without the sex aspect. I have talked about all this with my husband and this is how he feels too.