I will be staying in Granada for 10 days visiting my daughter who is studying there.

Does anyone know and companies offering day trips from Granada to other places?

There are plenty of day trips you can go on just on the bus for example Guadix or Cordoba.
For bus info click here
https://alsa.es

The commercial day trips tend to be quite expensive but if you want to have an all included trip some of them may be interesting.

There is a day trip to the  Caminito del Rey if you have a head for heights and several more.

Click here for information.
https://granadainfo.com/granada-day-trips/