Ok, I'm puzzled.
Why do you talk about 2 houses? Your neighbor and her daughter live in different houses? Mother in one house, daughter in another house?
If she wants wireless connection she needs a wireless router. Wireless routers usually have connections for wired computers too. So, if they are close (if the computers are close I mean) it is very simple to use a single router to create a LAN network (local area network), wired and wireless in the same time: the computers can be connected to network with cables (so we have wired computers) or wireless (no network cable involved for a computer or more).
If they live in different houses (different regions of town/country etc) we will have to talk about what programs do they want to use, so I may answer properly.
For not talking for nothing please clarify situation (I'm a little dunce sometimes, you have to tell me like you do with small children, sometimes a little draw would help me even more
![Smiley :)](https://www.computerhope.com/forum/Smileys/classic/smiley.gif)
). Where lives who, what do they want to do, what do they want to connect. But if you would know how to ask the questions, you most certainly would know to solve the problem almost without our help. So, step by step: how many computers are involved (approximatively, you don't have to ask/know the "exact number")? What is their physical location? Are they close, in the same home or they are in different places in town? Or different houses, neighbors?