Translation of solitary in Spanish

It looks like we need to invite Erika again to my home, once the cake is ready. Of course, this should be done before Sunday to stay in the chocolate cake race. We should buy cream too.
There might be another reason why the house was hit. Some houses have a little infrastructure problem and cannot protect themselves against flash lights. That means they are in constant risk of fire which can lead to catastrophic outcome.
No matter then. I wanted to study Spanish for years now, because you know, it really helps? And how long have you been learning Spanish? Please write me soon. Best wishes. Your Alfi.