Why would a older woman get mad when a young man makes a move?

I brought flowers and choclates to a 41 year old average looking single Sinaloa lady. The next day she told a coworkef she doesnt want me to show anymore. We got very along at first... Im 20 Mexican but look European tall slim but built. She has a daughter same age as me so maybe the daughter made her feel guilt. Her husband cheated alot. I supposed she wanted young meat. What do you ladies or love experts think...