Make sure you are giving her the correct ip. If you are not using direct connection, give it a try. use ipconfig in the command prompt to get your computer's IPv4 address. When she types it into the direct connection box, add :25565 to the end (for example: 192.168.1.45:25565) then try connecting.
When I start a solo game and switch it to lan my gf who is right next to me on her pc gets this when she tried to access it through multiplayer
io.netty.channel.abstractchannel$annotatedconnectexception
Make sure you are giving her the correct ip. If you are not using direct connection, give it a try. use ipconfig in the command prompt to get your computer's IPv4 address. When she types it into the direct connection box, add :25565 to the end (for example: 192.168.1.45:25565) then try connecting.
Browsing for texture packs? Why not try some of mine?
http://purplepigjr.wix.com/minecraft-packs#!resource-packs/csrnf