About three years ago a little tortie cat appeared and started trying to get into the house. She would get through open windows and sometimes pounce on us in the night. Occasionally we would return and find she had been in the house all day having snuck in the front door without is noticing.
At first I wasn't sure where she was from and she was scrawny. She was also riddled with fleas so I thought she might be a stray. We didn't actively encourage her by feeding her but we didn't spray her with water or anything.
Anyway as time went on she was spending more time sat outside the house and our bedroom window crying to come in. At the time I was heavily pregnant and on mat leave so was in a lot. In the end I flea treated her primarily because I did not want my house infested with fleas and also because she was twitching and scratching. I also wormed her and at this point we started to feed her.
Subsequently I found out from a neighbour where her owners lived. Apparently they had several cats and two big dogs which is maybe why 'my' cat moved out? Since she first started appearing she has now pretty well moved in, when we go on holiday my mum comes over twice a day and feeds her and the cat now has a cat flap 
.
My problem is that her owner's have split up and the house has now been sold. Do you think I should go round and speak to them or offer some money for their cat? I've kind of been at some weird halfway house with her the last couple of years where she isn't really mine yet appears to live here! I actually don't think she has been back to her owner's house for over a year.
Or should I just leave it? I'm fairly sure they know she has moved in with us and they've never said anything.
I am an awful cat stealing person. I never even wanted a cat.