Tik, I'm so sorry to hear about your mom. :hug: :muah: I hope she recovers quickly and is feeling better fast.
I didn't find actual patterns, but I did find this link to the pattern "One Skein Seasilk Shawl" (scroll down a bit) which is subtitled "Knitted Wings", and also, I found this blog which shows knitted wings.
I myself knitted this shawl, and ironically enough, when I finished it, it reminded me of wings. If my picture shows up (and please forgive my "artwork"...an artist, I am not!:oops:), it might help to get a better idea of the shape of the finished product. I used 100% acrylic (easy care! ) for this shawl and it knitted up beautifully, and didn't need any blocking.
I am sure whatever you knit for your mom, she will love it, will treasure it, and will appreciate it!